Here's my two cents worth
:
Foster's (obviously)
Avatar: The Last Airbender (kick-ass finale!)
Kim Possible
My Life as a Teenage Robot
Wallace & Gromit
Xiaolin Showdown
Family Guy
Robot Chicken
Histeria!
Ben 10
Danny Phantom
Teen Titans (possibly the only DC show I'll ever watch!)
Ed, Edd n' Eddy
The Powerpuff Girls
Inspector Gadget
Chip 'n' Dale: Rescue Rangers
Atomic Betty
Hi Hi Puffy AmiYumi
Victor & Hugo: Bunglers in Crime
Dave the Barbarian
Pokemon
Steel Angel Kurumi
Burn Up Excess
Cardcaptor Sakura
The Grim Adventures of Billy & Mandy
Most recently, Phineas and Ferb has become one of my favourites after seeing the episode Put That Putter Away. I was surprised at how funny it is. I especially loved the music in this show, especially the main song, which was (in this case) The Disco Minature Golfing Queen. I found myself singing along to it. And yes, Dr. Doofenshmirtz was hilarious!