I'm surprised nobody mentioned this but I always loved Johnny Bravo and the early Power Puff Girls cartoons, along with Dexter's Lab they were very funny and creatively written. I thought Iron Man was okay(the animation definitely could have been better, but the show was solid). TMNT rocked in the early and later seasons, but season three when Crang and Shreddr were stuck in Dimension X was kinda blah! Anywho I also loved Rugrats, Doug and Aahh!! Real Monsters.
Why list all those Disney movies? ... :( that is just annoying to scroll threw..
I prefer the original scooby Doo episodes, and Looney tunes. I watched most of the Aladdin, Gargoyles episodes I did enjoy Captain Planet, Beast wars and Sailor moon...
But what stands out above all the rest for me is Teenage mutant Ninja Turtles :D