Where to begin...
1) Invader Zim
(SO great with SO much more potential, blighted by the family groups' pressuring of a network it should never have been on!)
2) Futurama
3) Code Monkeys
(Its not like theres anything else on G4 of quality you need to make room for, at least not VIDEO GAME related!)
4) Frisky Dingo
5) The Xtacles
(2 Fucking Episodes and the damn studio breaks apart!)
6) Andy Barker P.I.
(Say what you will, I thought it was funny.)
7) The Big O
(Come on AdultSwim! This is coming from a non-Japanophile, bring it back for the much needed third season, or throw us a movie or something! This is the only fucking anime I'll watch other then Akira!)
At least they're promising a Samurai Jack movie, I'm a little insulted by the stereotype that is the Scotsman, but he's a great character nontheless (more a Roddy Piper, than Groundskeeper Willy mind you) and I'd like to see him fleshed out more.