I think I have like... somewhere in the neighborhood of nine boxes of shinies at this point, not counting the gsc ones (and the 1st-gen ditto i mimic-tricked into shininess). Most of them are the GTS or giveaway blogs, though. Far as actually-encountered in-game shinies (barring scripted red gyaras and event shinies), pbbbbt, lessee:
-Anomaly, the aforementioned ditto
-Graphyte, now a machamp
-A crobat whose name escapes me
(Those three are pre-3rd gen. I actually don't know if they're still around or not; I last left them on my Stadium 2 cart, and idk how reliable the battery on those is.)
3rd-gen onward: Kappucino (spinda), Rhodora (crobat), Ursula (walrein), Aureus (groudon), Happiness... (relicanth), Thaura (seadra), Amir (alomomola), Jonathan (druddigon), and of course Cambria.
EDIT: OH YEAH, and the feebas! Andraia. She's a milotic now.