There are so many that I am watching at the moment. I guess the top ones would be...
Darker Than Black
Asura Cryin' 2
And I'll stop there cause the list just goes on and on....
Doki Doki School Hours
Bokusatsu Tenshi Dokuro-chan
Puni Puni Poemi
Vampire to Rosario
and there are so many more I haven't started to watch, mostly comedies set in schools.
O there is so many! I watch at least 2 episodes, if I can, per day after work...
Nana (currently watching)
Rurouni kenshin(don't know if I spelled that correctly, probably not)
Hmm... I suppose mine would be (in no particular order!)
Full Metal Alchemist
To Aru Kagaku No Railgun
Bokusatsu Tenshi Dokoro-chan
Fate Stay Night
Oh I am so feeling Durarara! xD It is getting extra interesting
I like Baka to Test to Shoukanjuu x3
Katekyo Hitman Reborn!
And I guess pretty much all the mainstream ones x3
Azumanga Daioh is pretty awesome I like that even in the English dub they keep pretty much all of what is said in the Japanese version.
I do much prefer the Japanese one, but either way- cool to see xD