Since I'm bored, why not try to list all the animes I've seen (the ones that I can remember anyway or have in my music playlist in my Tumblr blog).
Elfen Lied
Infinite Stratos (and IS2)
Boku wa Tomodachi ga Sukunai (and NEXT)
Date A Live! (and II)
Detective Conan (hiatus, episode 33 or so)
Shuffle! (episode 15, dropped because it's so bad)
Sword Art Online (and II)
Highschool DxD (and NEW)
Akame ga Kill!
Crayon Shin-chan
AnoHana
Sakurasou no Pet na Kanojo
Love Live! (and S2, which is pseudo-dropped/hiatus)
THE iDOLM@STER
Angel Beats!
Rail Wars
Toaru Majutsu no Index (and II)
Toaru Kagaku no Railgun (almost finished)
Seikon no Qwaser (on hiatus)
Hunh, I've watched 19 series, not including seasons. I'm surprised by myself.