Theres lots of Stressed Eric on youtube. It became my nickname for a while as I am easily stressed
Ren & Stimpy was excellent. "New Log, from Blamo!" adverts were cool.
Like Family Guy although the "Like the time I (insert unrelated sketch here)" time fillers can be annoying. American Dad is just a Family Guy rehash but his boss is voiced by Patrick Stewart of all people.
Haven't seen Sealab or Aqua Teen - when are they on?
Glad someone mentioned Samurai Jack, I really like that. My daughter loves Spongebob so I've seen pretty much all of them.
We watch the new Transformers Animated Series too. If you like TF, its actually OK and has some great nods to the original series and comics.