Azumanga Daioh (funny highschool life anime)
melancholy of Suzumi Haruhi (name may be off)
Lucky Star
Kaiba (weird but good)
Xam'd (really started liking it lately)
Sayonara Zetsubou Sensei (very funny, but lots of reading)
Elfen Lied (just plain fantastic)


I'm out for now....think about it more later

Depends on what tastes you have for example if you like a good High school Romance/Comical show I would say Toradora or Special A. I'm right now watching 5 since I can only have that many before I start to lose interest >_>
All Together I good one is Soul Eater...

Yeah lots of those names may be off, hopefully not so much as to be unusable for any of em.

There's bunch you can stream for free at hulu.com. Just read some descriptions and watch some first episodes and see if any of them are good enough for you to keep watching.

i just watched the first episode of The Melancholy of Haruhi Suzumiya on youtube, its completley insane (i LOVE it) im watching episode 2 now!

Pokemon! (Pikachu!)