It would also help if you told us what kind of stuff you like. Do you like to laugh? Cry? Or perhaps you like being creeped out? Maybe a bit of gore and horror? Are you a fan of perverted elements? Do you like cuteness? There are many genres to choose from, but I don't know what you want.
Ones I know..
Blue Exoricst(Still going)
Bleach(Still going)
FMA
FMA:Brotherhood(My favorite.83)
Pokemon
Soul Eater
Lucky Star(An awesome anime 8D)
One Piece
Dragonball Z
Naruto
Naruto:Shippuden
Sailor Moon
Yu-Gi-Oh!
Shakugan no Shana
Death Note
Inuyasha
Furi Kuri(Or,also called,Fooli Cooli)
Cowboy Bebop
Shugo Chara
Black Butler
Fullmetal Panic!
Bakugan
Clannad
Code Geass
D.N.Angel
Some of what I've heard of,though.Please,look it up before asking on a question,there have been millions of these posted on both google and fanpop. link
Inuyasha
Death Note
Bleach
Code Geass
Full Metal Alchemist
One Piece
Dragon ball, dbz
Detective Conan (Case Closed)
Yu-Yu Hakusho
Ouran High School Host Club
Rurouni Kenshin (Samurai X)
Sailor Moon
Cowboy Bebop
Blood+
Trigun
Samurai Champloo
Eureka 7
Shaman King
Fooly Cooly (FLCL)
Trinity Blood
outlaw star
Reign: The Conqueror
thats all i can remember that i have saw that was really great.
but i had seen a lot more when i remember the rest then i well add them.