Hmmmmm...........
I have more than one fav... :
Elfen Lied,
Great Teacher Onizuka,
Hunter x Hunter,
Azumanga Daioh,
Midori No Hibi,
Grave Of Fireflies (I was crying so much) ,
School Rumble,
Rozen Maiden,
Slayers,
Comedy...
Those are my favs, but there are more things that I like...