Originally Posted by Lizzie the Badger
I really recommend the Fullmetal Alchemist Brotherhood series. (It's better than plan old Fullmetal Alchemist in my opinion) Both are worth watching, though.
One Piece is another one, but you have to be patient with it.
Other anime I watch that you might like- Ouran High School Host Club, Beelzebub, Fruits Basket, Soul Eater.
those are all very good :)
If you want something a little darker, Wolf's Rain is excellent (a bit depressing, but it'll make you think)
A Certain Magical Index is fun too (mostly light hearted)
Inuyasha of course is a classic if you haven't seen it yet, Bleach is great, It really depends on what you're in to xD