Lol guys people having their own opinions so try not to shove it down their throats.
I personally think that Gen Five well... was a bit... not gonna say boring, but more tame. There was nothing ground-breaking like what the other gens introduced. Gen I introduced... well, Pokemon. Gen II gave the Special Split, Gen III brought abilities and EVs/IVs (I think) to the table, Gen IV introduced the Physical/Special Split, which made some moves more viable than others. Gen V... well, one can argue that it brought Dream World Abilities, but that was an add-on to the already implemented feature in Abilities. While three abilities is a fistful to choose from, it still isn't really that "groundbreaking".
As for the games itself, it really broke tradition. The usual rock type gym was banished into the deepest container, and brought new ideas in terms of a trio-leader, and a properly-recognised Sequel. Gen V also brought cool-jelly stuff to the table, such as 3D, enhancement in breeding mechanics, new type combinations and an "isolation" where no older pokemon could be caught as well as the last trainer to be fought before the main story is completed not a champion, seasons and more. Black 2 and White 2 brought even more features in the form of PWT - able to battle all gym leaders -, further enhancements in breeding and aspects of shiny hunting, expanded area from the previous BW as well as the ability to catch multiple old legendaries: Regi trio, Lake trio, Lati@s... Hidden Grotto also is another breakthrough, giving a free-legit way to farm DW Pokemon in-game.
Overall, IMO, 5th Gen is definitely a fast-paced gen. Despite it not introducing HUGE mechanic changes to the table, it'll still be considered as a good gen (say all you want genwunners) and BW2 is considered some of the best games by many.~