I LOVED ROCKO'S MODERN LIFE! such an awesome cartoon. why don't they show any of the good cartoons anymore??

Ahh... Classic Nicktoons... I miss the monsters!

"Everything I know about Jewish holidays I learned from the Rugrats."

If you say just American then it has to be the simpsons

If you allow all Shadow Skill, with second being DBZ

Cowboy Bebop is great, as are several other animes that I own
I assume those count as cartoons :)