As said by mouseclicker, Ender's Game by Orson Scott Card is among one of my favorites, as well as the compainion Ender's Shadow and the sequal Shadow of the Hegemon. All quality titles.
It's summer right now, so books to expand my vocab are off my list. So far, I've read all Dave Barry. He's a humor columnest for the Miami Hereld who has written a few books. I just read Dave Barry Does Japan and Dave Barry in Cyberspace, which were both really funny. But i must warn you, his style gets old rather quickly and he has a tendency to repeat joke. Well at least they're funny jokes. Most of them anyway.
I don't know how old any of you really are, but I'm only thirteen so these books might be under your level (or above, who knows?) But I also enjoyed The Golden Compass, The Subtle Knife, and The Amber Spygalss and by some author i can't think of right now. Yeah, those were good.
As for anime, I tried to get into it, but I just couldn't. Dragonball and Dragonball Z seemed like crap to me, and Transformers Armada was poopy. The only one I started to like was, as mention earlier, Yu Yu Hakasho. Some of the body designs are weird though.
uh.. Grey Ninja...Spirited Away was plenty weird, but also extrmely good. Recommended.