I too remember fondly the cartoons of the 90's. For Nickelodeon I would watch The Rugrats, Hey Arnold, CatDog, Angry Beavers,The Wild Thornberries, and SpongeBob Squarepants (before it got stupid like it is today). For Cartoon Network I would watch Courage the Cowardly Dog, Johnny Bravo, Dexter's Laboratory, Cow and Chicken, and Ed, Edd, n Eddy. Now these channels have such crap shows that I really don't even bother watching them anymore, although I do like Adventure Time, Regular Show, and The Amazing World of Gumball on Cartoon Network (these cartoons actually don't suck and are pretty funny).
I don't really watch cartoons anymore but I've started liking documentaries lately. I now enjoy shows like Ghost Adventures, Bizarre Foods, Deadly Women, Pawn Stars, and River Monsters.