Of all time:

Teenage Mutant Ninja Turtles - the first series(or two, not the new stuff), I got out the old VCR to watch them, and I can't believe how funny these things were. Raph is a sarcastic genius.

Batman the Animated Series - the first series(the one that always used to come on after Toonami and late at night.) Best animated series ever. What the hell is that "The Batman" crap that comes on nowadays?

Cowboy Bebop
Ripley's Believe it or Not
Saturday Night Live
Futurama
AHH!! Real Monsters
Mobile Suit Gundam
Thundercats
Rugrats (the first few seasons anyways, that show used to be brilliant)
Mystery Science Theater 3000
Greg the Bunny
Outlaw Star

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In the rain, which are you? A raindrop or a tear?