Oh, I've already been reading Naruto, it's pretty good. Damn that's a big list of manga. I got enough suggestions to last me a freaking year! Thanks guys.
EDIT: Quick Question - I watched a school anime like maybe a couple of years ago that came on TechTv late night maybe? Anyway, it was about this new guy that came to school and he was a "badass" and their were "badass" people at the school and they started following him or something (I'm not saying he's a badass, but they threw that word around a lot when referring to people in anime). It was pretty lighthearted, like not DBZ-style battle or anything of the sort. I also seem to recall some kind of robot that pretended to be a human (but was pretty obviously a robot) that was his rival. It also had a pretty weird name and an awesome intro. Any ideas at to what it's called and if it's a Manga or only an Anime? It's been racking my brain all day.

EDIT2: Found it, it was Cromartie High School. That show rocked.