You guys are mentioning gold in this forum!
Cosign Doug
Looney Tunes got on my nerves sometimes. But Daffy is the GOAT minus all of the dressing up like a woman every so often.
Wile E Coyote was a good one too.
Y'all forgot :
Ren and Stimpy
The Rough Necks
Rocko's Modern Life
Rescue Rangers
Captian Cave Man!
Hey Arnold
X men (the cartoon aired on Fox)
Recess
The Tick
The plots of some of the 80s cartoons were really stupid at times now that I can look at it in a different light. Denver the Dinosaur is a great example of this.
As far as new school cartoons go, I haven't really seen any other than The Last Air Bender. I've tried to watch some of the other cartoons, but I can't even sit through them long enough. They make too much unnecessary noise for me.