South Park
Cowboy Bebop (IT STILL COMES ON TV!! On adult swim, saturdays)
Metalocalypse (it's retarded but the funny kind)
I used to watch this show with a sort of URL type name but I cannot remember it. It was like this online video game where some serious shit went on, (behind the scenes I think) sometimes people died or something IRL) It was really interesting though I was really young when I watched it, and had to stay up to like 4 AM to catch it where I lived. Of which, being like 10 I had a hard time not crashing out... It was like general mmo style you see today with different races n shit. I really wish I knew what it was called so I could watch it again...
- if you know it tell me, but i doubt i give enough info for any hint

Anyways, moving on:
Beavis and Butthead
Aqua Teen Hunger Force
Space Ghost (on web obviously, no longer on T.V. >:C)
All I can think of off the top of my head.