Let's see
Venture Bros.- One of the few reasons as to why I still watch Adult Swim, I think it is one of the most clever shows to air on Adult Swim this decade.
Kim Possible- It was OK really, I liked it myself but it isn't something I would put in my top 5, I mostly liked the villains, Rufus, and Ron from this series, never really liked Kim as a character for some reason.
Samurai Jack- While it did have some nice art to it, the plot never really went anywhere. Sure it was great to look at, but I really wanted Jack to kill Aku and go back to the past. hopefully the movie will do that.
Fosters- Pretty good show, I actually love the creativity that went into it. From the imaginary friends, to some of the stories.
Avatar- Truly was a great show, despite the bumpy season 3. Shows that Nickelodeon is capable of doing an action series with some serious moments, balanced out with some comical ones as well. Also the fight scenes rocked.
Collage- Nicely done. It's cute, it's funny, and a good way to close off the list. I really like Fry and Peter drinking together with Hank looking at them, Monarch and Zim yelling at each other, Spongebob and Flapjack laughing together, and Chowder chasing the Robot Chicken.
Really, the only thing I would have added was TMNT, and Spectacular Spider Man.