when i was a kid the big ones were Tiny Toon Adventures, Animaniacs, Batman TAS, Super Mario Bros Super Show, and Freakazoid. i always thought the early Nick Toons were kinda pathetic. Doug was just a p****, Rug Rats was too cutesy, and Ren & Stimpy I thought was just stupid. Rocko's Modern Life was brilliant though, as was Invader Zim and Fairly Odd Parents.
right now i think the big bastion of quality animation is Cartoon Network, cause you can enjoy all their shows no matter what age you are. Foster's Home for Imaginary Friends, Powerpuff Girls, Samurai Jack, Billy and Mandy, i'm almost 23 and i love these shows to death.
Nickelodeon and Disney Channel i think are the bottom of the barrel. Dora the Explorer is the freaking devil, that's all there is to it. Speedy Gonzales gets banned and Dora stays on? if i had a kid i'd rather let him watch Speedy than Dora. Kim Possible had a few moments, but anything else on the Disney channel is cel-shaded death.
remember back in the day when Nickelodeon had stuff like Eureka's Castle and The Adventures of Pete & Pete? then Amanda Bynes came along, the network tried to appeal to tweens, and everything went to Hell. the shows we enjoyed in the early 90's totally couldn't happen again, and that's sad cause i still enjoy them as an adult.
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OH GOODIE! - Three Chords in Three Panels
ohgoodie.net
NEVER NORMAL - Saving the World Between Sketchbooks
nevernormal.net