For newcomers - No, there are no skipped episodes. What is actually going on is that three episodes - the Maracacchi/Maractus, Mebukijika/Sawsbuck and Gothimu/Gothita episodes, which were aired right after the battle with Adeku/Alder, were actually intended to be aired right after the gym battle with Yacon/Clay, but were edited and moved to this new position due to them being part of an advertising campaign for Pokepark 2.
Original post follows:
Current list of wholly verified Live Caster segments:
BW1 - Starter Pokemon
BW2 - Monster Balls
BW3 - Pokemon Zukan (note, the initial airing of this episode aired the BW1 segment instead, presumably because it has Okido introducing the segment itself)
BW4 - Pokemon Battle Club
BW5 - Tsutarja (Snivy)
BW6 - Mijumaru (Oshawott)
BW7 - Pokabu (Tepig)
BW8 - Pokemon Center
BW9 - Gym Matches and Gym Leaders
BW10 - Pokemon Battles
BW11 - Mamepato (Pidove) from BW2
BW12 - Meguroco (Sandile) from BW3
BW13 - Yanappu (Pansage) from BW5
BW14 - Kibago (Axew) from BW6
BW15 - Darumakka (Darumaka) from BW8
BW16 - Pendror (Scolipede) from BW9
BW17 - Pururill (Frillish) from BW10
BW18 - Janovy (Servine) from BW10
BW19 - Ishizumai (Dwebble) from BW11
BW20 - Yabukuron (Trubbish) from BW12
BW21 - Chillarmy (Minccino) from BW13
BW22 - Deathmas (Yamask) from BW14
BW23 - (unaired)
BW24 - (unaired)
BW25 - Herderrier (Herdier) from BW16
BW26 - Zuruggu (Scraggy) from BW17
BW27 - Minezumi (Patrat) from BW18
BW28 - Kurumiru (Sewaddle) from BW18
BW29 - Koaruhie (Ducklett) from BW20
BW30 - Gothiruselle (Gothitelle) from BW21
BW31 - Fushide (Venipede) from BW22
BW32 - Koromori (Swoobat) from BW23/24
BW33 - Waruvile (Krokorok) from BW23/24
BW34 - Hahakomori (Leavanny) from BW25
BW35 - Wheega (Whirlipede) from BW25
BW36 - Bassrao (Basculin) from BW26
BW37 - Emonga (Emolga) from BW27
BW38 - Hitomoshi (Litwick) from BW29
BW39 - Crimgan (Druddigon) from BW30
BW40 - Shimama (Blitzle) from BW31
BW41 - Monmen (Cottonee) from BW32
BW42 - Ligray (Elgyem) from BW33
BW43 - Vanipeti (Vanillite) from BW34
BW44 - Gamagaru (Palpitoad) from BW34
BW45 - Dokkorer (Timburr) from BW34
BW46 - Tunbear (Beartic) from BW36
BW47 - Dangoro (Roggenrola) from BW37
BW48 - Gothimu (Gothita) from BW38
BW49 - Uniran (Solosis) from BW38
BW50 - Tabunne (Audino) from BW38
BW51 - Archen from BW39
BW52 - Zorua from BW40
BW53 - Mooland (Stoutland) from BW41
BW54 - Zebraika (Zebstrika) from BW41
-
BW55 - Vulgina (Mandibuzz) from BW45
BW56 - Zuruzukin (Scrafty) from BW45
BW57 - Choroneko (Purrloin) from BW46
-
BW58 - Dotekkotsu (Gurdurr) from BW42
BW59 - Komatana (Pawniard) from BW42
BW60 - Merlarva (Larvesta) from BW43
BW61 - Dageki (Sawk) from BW43
BW62 - Muggyo (Stunfisk) from BW43
BW63 - Gobit (Golett) from BW44
-
BW64 - Ohbem (Beeheeyem) from BW47
BW65 - Doublan (Duosion) from BW47
BW66 - Kumasyun (Chubchoo) from BW48
BW67 - Kojofu (Mienfoo) from BW48
BW68 - Chobomaki (Shelmet) from BW51
BW69 - Shibishirasu (Tynamo) from BW52
BW70 - (as of yet unverified)
BW71 - Chandela (Chandelure) from BW53
BW72 - (as of yet unverified)
BW73 - Maracacchi (Maractus) from BW55
BW74 - Baoppu (Pansear) from BW60
BW75 - Shikijika (Deerling) from BW56/57
BW76 - (as of yet unverified)
BW77 - Agilder (Accelgor) from BW59
BW78 - Vanirich (Vanillish) from BW59
BW79 - Gothimiru (Gothorita) from BW61
BW80 - (as of yet unverified)
BW81 - (as of yet unverified)
BW82 - (as of yet unverified)
BW83 - (as of yet unverified)
BW84 - (as of yet unverified)
BW85 - (as of yet unverified)
BW86 - (as of yet unverified)
BWS2-1 - (as of yet unverified)
BWS2-2 - (as of yet unverified)
BWS2-3 - (as of yet unverified)
BWS2-4 - (as of yet unverified)
BWS2-5 - (as of yet unverified)
BWS2-6 - (as of yet unverified)
BWS2-7 - Kirikizan (Bisharp) from BW73
Currently unfeatured LC Pokemon (ie Pokemon who are not considered to have been significantly featured in the show as of BW60)
494: Victini
495: (BW5)
496: (BW18)
497: Jalorda/Serperior (BWS2-6)
498: (BW7)
499: Chaoboo/Pignite (BW79)
500: Enbuoh/Emboar (BW73)
501: (BW6)
502: Futachimaru/Dewott (BW73)
503: Daikenki/Samurott
504: (BW27)
505: Miruhog/Watchog (BW14, probably BW23's subject)
506: Yorterrie/Lillipup (BW15, probably BW24's subject)
507: (BW25)
508: (BW53)
509: (BW57)
510: Lepardas/Liepard
511: (BW13)
512: Yanakkie/Simisage (BW72)
513: (BW74)
514: Baokkie/Simisear
515: Hiyappu/Panpour
516: Hiyakkie/Simipour (BW74)
517: Munna
518: Musharna
519: (BW11)
520: Hatoboh/Tranquill (BW70)
521: Kenhallow/Unfezant (BW69)
522: (BW40)
523: (BW54)
524: (BW47)
525: Gantle/Boldore (BW63)
526: Gigaiath/Gigalith (BW54, probably BW72's subject)
527: (BW32)
528: Kokoromori/Swoobat (BW69)
529: Mogurew/Drilbur
530: Doryuzu/Excadrill (BW63)
531: (BW50)
532: (BW45)
533: (BW58)
534: Roubushin/Conkeldurr (BW72)
535: Otamaro/Tympole
536: (BW44)
537: Gamageroge/Seismitoad (BW67)
538: Nageki/Throh (BW72)
539: (BW61)
540: (BW28)
541: Kurumayu/Swadloon (BW76)
542: (BW34)
543: (BW31)
544: (BW35)
545: (BW16)
546: (BW41)
547: Elphoon/Whimsicott (BW82)
548: Tuline/Petilil (BW82)
549: Dredear/Lilligant (BW61)
550: (BW36)
551: (BW12)
552: (BW33)
553: Waruvial/Krookodile (BW84)
554: (BW15)
555: Hihidaruma/Darmanitan (BWS2-6)
556: (BW73)
557: (BW19)
558: Iwapalace/Crustle (BW64)
559: (BW26)
560: (BW56)
561: Symboler/Sigiglyph (BW66)
562: (BW22)
563: Deathkarn/Cofagrigus (BW66)
564: Protoga/Tirtouga (BW77)
565: Abagoura/Carracosta (BW78)
566: (BW51)
567: Archeos/Archeops
568: (BW20)
569: Dustdas/Gardobor (BW86)
570: (BW52)
571: Zoroark
572: (BW21)
573: Chillaccino/Cinccino (BWS2-6)
574: (BW48)
575: (BW79)
576: (BW30)
577: (BW49)
578: (BW65)
579: Lanculus/Reuniclus (BWS2-6)
580: (BW29)
581: Swanna (BW69)
582: (BW43)
583: (BW78)
584: Baivanilla/Vanilluxe (BW83)
585: (BW75)
586: Mebukijika/Sawsbuck
587: (BW37)
588: Kaburumo/Karrablast (BW65)
589: Chevargo/Escavalier (BW65)
590: Tamagetake/Foongus (BW82)
591: Morobareru/Amoonguss
592: (BW17)
593: Burungel/Jellicent (BW80)
594: Mamanbou/Alomomola
595: Bachuru/Joltik (BW64)
596: Dentula/Galvantula (BW64)
597: Tesseed/Ferroseed (BW83)
598: Nutrey/Ferrothorn (BWS2-5)
599: Giaru/Klink (BW65)
600: Gigiaru/Klang
601: Gigigiaru/Klinklang (BW65)
602: (BW69)
603: Shibibeel/Eelektrik
604: Shibirudon/Eelektross (BW53, probably BW70's subject)
605: (BW42)
606: (BW64)
607: (BW38)
608: Lampler/Lampent
609: (BW71)
610: (BW14)
611: Onondo/Fraxure
612: Ononokus/Haxorus
613: (BW66)
614: (BW46)
615: Freegeo/Cryogonal (BW81)
616: (BW68)
617: (BW77)
618: (BW62)
619: (BW67)
620: Kojondo/Mienshao (BW73)
621: (BW39)
622: (BW63)
623: Goloog/Golurk (BW84)
624: (BW59)
625: (BWS2-7)
626: Buffron/Bouffalant (BW68)
627: Washibon/Rufflet
628: Warrgle/Braviary
629: Valchai/Vullaby
630: (BW55)
631: Kuitaran/Heatmor (BW79)
632: Aiant/Durant (BW76)
633: Monozu/Deino (BW58, probably BW76's subject)
634: Dihead/Zweilous
635: Sazandora/Hydreigon (BWS2-5)
636: (BW60)
637: Ulgamoth/Volcarona (BW80)
638: Cobalon/Cobalion
639: Terrakion
640: Virizion
641: Tornelos/Tornadus (BW61)
642: Voltolos/Thundurus (BW61)
643: Reshiram
644: Zekrom
645: Landlos/Landorus (BW62)
646: Kyurem
647: Keldeo
648: Meloetta (S201)
Original post follows:
Ok, so as you as probably know, each episode ends with a segment where Professor Okido giving a lecture on a Pokemon. This is nothing new - apart from some periods where they've done quizes instead, these segments have been around since Kanto.
What is new in BW, though, is that these lectures go in strict chronological order of first "major" appearance ("major" meaning an appearance they can get a lot of video footage from). Every single episode from BW11 and up (BW1-10 focused on related themes, like "Pokemon centers", "gym battles", etc) have featured this chronological runthrough - sometimes the segment doesn't air the first time around due to some movie preview, raffle, etc. airing in its place, but the segment written for that episode still exists, and is aired in all later reruns.
Whether episodes are skipped or not isn't taken into account either - BW22 did a segment on Deathmas (from BW14) and BW25, the next episode to air as the earthquake postponed BW23 and BW24, did a segment on Herderrier (from BW16). It can be safely assured that Yorterrie and Miruhog, which were prominently featured in BW15, were the segments intended for BW23 and 24.
Likewise, when BW27 aired next, its segment focused on Minezumi (which, while not really featured, had a good share of scenes in BW18, and the segment largely used scenes from there), while BW28 focused on Kurumiru (also from BW18). So.. what about Zuruggu, which had a huge role in BW17? Sure enough - when BW26 eventually aired, months later, it featured a segment on Zuruggu.
In addition, BW32 and 33 featured Koromori and Waruvile respectively (while the former didn't use unaired footage, and the second used a split-second of it, it's pretty obvious these were given segments due to their roles in the skipped BW23 and 24 - BW31's segment was (presumably) on BW22's Fushide, and BW34's was on BW25's Hahakomori. BW36 likewise did a feature on Bassrao from the as-of-yet-unaired BW26.
So from all this, we can safely say that:
-these live caster features go in chronological order as per first "notable" anime appearance.
-all episodes, aired and unaired alike, have a specific feature assigned to them. If the feature doesn't air due to some promotion taking its place, so be it. Reruns will use the originally intended feature.
-episodes being aired out of order will use their originally intended live caster feature.
So going by these "rules", it should be easy to tell if an episode is aired out of order (the live caster feature will be one obviously intended to have been aired earlier), or that episodes were skipped (there'll be a noticable hole in the sequence of featured Pokemon).
With that said - here are the featured Pokemon from the last 7 episodes' Live Casters:
BW51 - Archen (from BW39)
BW52 - Zorua (from BW40)
BW53 - Mooland (from BW41)
BW54 - Zebraika (from BW41/42) - surprised at the use of this actually, it didn't get that much screentime, and the feature mostly used footage from the later gym battles)
BW55 - Vulgina (from BW45)
BW56 - Zuruzukin (from BW45)
BW57 - Choroneko (from BW46)
so... notice anything odd?
Dotekkotsu, Komatana, Merlarva, Gobit and Dageki were all prominently featured in BW42-43. Skipping over ALL of them? Surely it seems like there's something odd going on here.
(also, there's oddities like Dredear and Morobareru just kinda debuting in the background in BW55 and 56 - kinda like they weren't actually debuts after all. It's not completely unprecedented, but pretty abnormal for BW)
Current list of wholly verified Live Caster segments:
BW1 - Starter Pokemon
BW2 - Monster Balls
BW3 - Pokemon Zukan (note, the initial airing of this episode aired the BW1 segment instead, presumably because it has Okido introducing the segment itself)
BW4 - Pokemon Battle Club
BW5 - Tsutarja (Snivy)
BW6 - Mijumaru (Oshawott)
BW7 - Pokabu (Tepig)
BW8 - Pokemon Center
BW9 - Gym Matches and Gym Leaders
BW10 - Pokemon Battles
BW11 - Mamepato (Pidove) from BW2
BW12 - Meguroco (Sandile) from BW3
BW13 - Yanappu (Pansage) from BW5
BW14 - Kibago (Axew) from BW6
BW15 - Darumakka (Darumaka) from BW8
BW16 - Pendror (Scolipede) from BW9
BW17 - Pururill (Frillish) from BW10
BW18 - Janovy (Servine) from BW10
BW19 - Ishizumai (Dwebble) from BW11
BW20 - Yabukuron (Trubbish) from BW12
BW21 - Chillarmy (Minccino) from BW13
BW22 - Deathmas (Yamask) from BW14
BW23 - (unaired)
BW24 - (unaired)
BW25 - Herderrier (Herdier) from BW16
BW26 - Zuruggu (Scraggy) from BW17
BW27 - Minezumi (Patrat) from BW18
BW28 - Kurumiru (Sewaddle) from BW18
BW29 - Koaruhie (Ducklett) from BW20
BW30 - Gothiruselle (Gothitelle) from BW21
BW31 - Fushide (Venipede) from BW22
BW32 - Koromori (Swoobat) from BW23/24
BW33 - Waruvile (Krokorok) from BW23/24
BW34 - Hahakomori (Leavanny) from BW25
BW35 - Wheega (Whirlipede) from BW25
BW36 - Bassrao (Basculin) from BW26
BW37 - Emonga (Emolga) from BW27
BW38 - Hitomoshi (Litwick) from BW29
BW39 - Crimgan (Druddigon) from BW30
BW40 - Shimama (Blitzle) from BW31
BW41 - Monmen (Cottonee) from BW32
BW42 - Ligray (Elgyem) from BW33
BW43 - Vanipeti (Vanillite) from BW34
BW44 - Gamagaru (Palpitoad) from BW34
BW45 - Dokkorer (Timburr) from BW34
BW46 - Tunbear (Beartic) from BW36
BW47 - Dangoro (Roggenrola) from BW37
BW48 - Gothimu (Gothita) from BW38
BW49 - Uniran (Solosis) from BW38
BW50 - Tabunne (Audino) from BW38
BW51 - Archen from BW39
BW52 - Zorua from BW40
BW53 - Mooland (Stoutland) from BW41
BW54 - Zebraika (Zebstrika) from BW41
-
BW55 - Vulgina (Mandibuzz) from BW45
BW56 - Zuruzukin (Scrafty) from BW45
BW57 - Choroneko (Purrloin) from BW46
-
BW58 - Dotekkotsu (Gurdurr) from BW42
BW59 - Komatana (Pawniard) from BW42
BW60 - Merlarva (Larvesta) from BW43
BW61 - Dageki (Sawk) from BW43
BW62 - Muggyo (Stunfisk) from BW43
BW63 - Gobit (Golett) from BW44
-
BW64 - Ohbem (Beeheeyem) from BW47
BW65 - Doublan (Duosion) from BW47
BW66 - Kumasyun (Chubchoo) from BW48
BW67 - Kojofu (Mienfoo) from BW48
BW68 - Chobomaki (Shelmet) from BW51
BW69 - Shibishirasu (Tynamo) from BW52
BW70 - (as of yet unverified)
BW71 - Chandela (Chandelure) from BW53
BW72 - (as of yet unverified)
BW73 - Maracacchi (Maractus) from BW55
BW74 - Baoppu (Pansear) from BW60
BW75 - Shikijika (Deerling) from BW56/57
BW76 - (as of yet unverified)
BW77 - Agilder (Accelgor) from BW59
BW78 - Vanirich (Vanillish) from BW59
BW79 - Gothimiru (Gothorita) from BW61
BW80 - (as of yet unverified)
BW81 - (as of yet unverified)
BW82 - (as of yet unverified)
BW83 - (as of yet unverified)
BW84 - (as of yet unverified)
BW85 - (as of yet unverified)
BW86 - (as of yet unverified)
BWS2-1 - (as of yet unverified)
BWS2-2 - (as of yet unverified)
BWS2-3 - (as of yet unverified)
BWS2-4 - (as of yet unverified)
BWS2-5 - (as of yet unverified)
BWS2-6 - (as of yet unverified)
BWS2-7 - Kirikizan (Bisharp) from BW73
Currently unfeatured LC Pokemon (ie Pokemon who are not considered to have been significantly featured in the show as of BW60)
494: Victini
495: (BW5)
496: (BW18)
497: Jalorda/Serperior (BWS2-6)
498: (BW7)
499: Chaoboo/Pignite (BW79)
500: Enbuoh/Emboar (BW73)
501: (BW6)
502: Futachimaru/Dewott (BW73)
503: Daikenki/Samurott
504: (BW27)
505: Miruhog/Watchog (BW14, probably BW23's subject)
506: Yorterrie/Lillipup (BW15, probably BW24's subject)
507: (BW25)
508: (BW53)
509: (BW57)
510: Lepardas/Liepard
511: (BW13)
512: Yanakkie/Simisage (BW72)
513: (BW74)
514: Baokkie/Simisear
515: Hiyappu/Panpour
516: Hiyakkie/Simipour (BW74)
517: Munna
518: Musharna
519: (BW11)
520: Hatoboh/Tranquill (BW70)
521: Kenhallow/Unfezant (BW69)
522: (BW40)
523: (BW54)
524: (BW47)
525: Gantle/Boldore (BW63)
526: Gigaiath/Gigalith (BW54, probably BW72's subject)
527: (BW32)
528: Kokoromori/Swoobat (BW69)
529: Mogurew/Drilbur
530: Doryuzu/Excadrill (BW63)
531: (BW50)
532: (BW45)
533: (BW58)
534: Roubushin/Conkeldurr (BW72)
535: Otamaro/Tympole
536: (BW44)
537: Gamageroge/Seismitoad (BW67)
538: Nageki/Throh (BW72)
539: (BW61)
540: (BW28)
541: Kurumayu/Swadloon (BW76)
542: (BW34)
543: (BW31)
544: (BW35)
545: (BW16)
546: (BW41)
547: Elphoon/Whimsicott (BW82)
548: Tuline/Petilil (BW82)
549: Dredear/Lilligant (BW61)
550: (BW36)
551: (BW12)
552: (BW33)
553: Waruvial/Krookodile (BW84)
554: (BW15)
555: Hihidaruma/Darmanitan (BWS2-6)
556: (BW73)
557: (BW19)
558: Iwapalace/Crustle (BW64)
559: (BW26)
560: (BW56)
561: Symboler/Sigiglyph (BW66)
562: (BW22)
563: Deathkarn/Cofagrigus (BW66)
564: Protoga/Tirtouga (BW77)
565: Abagoura/Carracosta (BW78)
566: (BW51)
567: Archeos/Archeops
568: (BW20)
569: Dustdas/Gardobor (BW86)
570: (BW52)
571: Zoroark
572: (BW21)
573: Chillaccino/Cinccino (BWS2-6)
574: (BW48)
575: (BW79)
576: (BW30)
577: (BW49)
578: (BW65)
579: Lanculus/Reuniclus (BWS2-6)
580: (BW29)
581: Swanna (BW69)
582: (BW43)
583: (BW78)
584: Baivanilla/Vanilluxe (BW83)
585: (BW75)
586: Mebukijika/Sawsbuck
587: (BW37)
588: Kaburumo/Karrablast (BW65)
589: Chevargo/Escavalier (BW65)
590: Tamagetake/Foongus (BW82)
591: Morobareru/Amoonguss
592: (BW17)
593: Burungel/Jellicent (BW80)
594: Mamanbou/Alomomola
595: Bachuru/Joltik (BW64)
596: Dentula/Galvantula (BW64)
597: Tesseed/Ferroseed (BW83)
598: Nutrey/Ferrothorn (BWS2-5)
599: Giaru/Klink (BW65)
600: Gigiaru/Klang
601: Gigigiaru/Klinklang (BW65)
602: (BW69)
603: Shibibeel/Eelektrik
604: Shibirudon/Eelektross (BW53, probably BW70's subject)
605: (BW42)
606: (BW64)
607: (BW38)
608: Lampler/Lampent
609: (BW71)
610: (BW14)
611: Onondo/Fraxure
612: Ononokus/Haxorus
613: (BW66)
614: (BW46)
615: Freegeo/Cryogonal (BW81)
616: (BW68)
617: (BW77)
618: (BW62)
619: (BW67)
620: Kojondo/Mienshao (BW73)
621: (BW39)
622: (BW63)
623: Goloog/Golurk (BW84)
624: (BW59)
625: (BWS2-7)
626: Buffron/Bouffalant (BW68)
627: Washibon/Rufflet
628: Warrgle/Braviary
629: Valchai/Vullaby
630: (BW55)
631: Kuitaran/Heatmor (BW79)
632: Aiant/Durant (BW76)
633: Monozu/Deino (BW58, probably BW76's subject)
634: Dihead/Zweilous
635: Sazandora/Hydreigon (BWS2-5)
636: (BW60)
637: Ulgamoth/Volcarona (BW80)
638: Cobalon/Cobalion
639: Terrakion
640: Virizion
641: Tornelos/Tornadus (BW61)
642: Voltolos/Thundurus (BW61)
643: Reshiram
644: Zekrom
645: Landlos/Landorus (BW62)
646: Kyurem
647: Keldeo
648: Meloetta (S201)
Last edited: