3. Rocco's Modern Life
We don't know how they did it, but Nickelodeon made wallabies cool. Hell, we didn't even know what a wallaby was before Rocco's Modern Life hit the scene. Rocco was riddled with dark humor and double-entendres, the genius of which we can only truly appreciate in retrospect. But before we knew what the word satire meant, we were entranced with Rocco's seriously OCD bestie Filburt, a turtle filled with more neuroses than a DSM manual. Dude was nuts, and he only made us appreciate our own, semi-sane friends that much more.