Since we're doing 90's toons...
1. Nickelodeon: I was practically hooked on the channel growing up, and I liked just about every 90s Nicktoon (didn't care for CatDog, Rocket Power, or Ren & Stimpy, save a few episodes).
2. WB: When I didn't feel like watching Nick (there were times), there was Animaniacs, Tiny Toons, and Freakazoid!
3. Cartoon Network: The only Cartoon Cartoons I liked were Powerpuff Girls, Dexter's Lab, and Courage (in that order). Johnny Bravo was all right, but Cow and Chicken was downright stupid.
(And all three aired Looney Tunes at some point)
4. Disney: The only ones I watched were Ducktales, Gargoyles, Pepper Ann, and Recess. The rest were all right, but I never gave them much thought.