Welcome to CAA
Fullmetal Alchemist and Bleach are both awesome! I'd like to see Planetes, it looks really different from most other anime out there.
I've never watched One Piece. I know you shouldn't judge an anime by the art, but I can't help it, it just looks so weird to me. Yet, from what I hear, its actually suppose to be the best out of the "big five", or whatever--all those really long running ones (Bleach, Fairy Tail, etc.).
Anyways, I hope you enjoy it here!