Also, OP, You know to nevereverevereverever watch an anime in English, right? Seriously. Subtitles or nothing.
Here's Death Note:http://www.veoh.com/channels/DeathNoteSeriez?confirmed=1
(Yeah, I know, "LOL, VEOH," and he really should just torrent them, but he should be fine.)
Rozen Maiden (Slice of Life for the first bit/Action/more slice of life/action/slice of li- WHAT THE FUCK, ACTION, OH DAMN, WHY DID SHE HAVE TO DIE.)
Death Note (HOLY FUCK, MIND BATTLES. EPIC THINKING, WRITING, SWIMMING, AND POTATO CHIP EATING.)
Azumanga Daioh (Awesome slice of life series. Fucking hilarious and adorable to boot. A required series.)
Kodomo no Jikan (Another Slice of life, pretty funny, lolis in underwear.)
Lucky Star (It's like Seinfeld, but with 8 year olds pretending to be 17.)
Case Closed (Pretty good detective anime, but holy shit, do Death Note first.)
Ideally, watch a few really intense animes, and then cool off with a slice of life series like Azumanga.