I watched just about every 90's cartoon. After I started watching Dragonball Z in 2002 or so, I kind drifted away from cartoons. But here is a list of my favorites that I still love watching today.
Ed, Edd & Eddy
Winnie the Pooh
Scooby-Doo
Tom & Jerry
Scooby Doo
Rocko's Modern Life
Kim Possible
Rocket Power
The Proud Family
Catdog
Recess
The Weekenders
Johnny Bravo
Doug
Looney Tunes
The Rugrats
Hey Arnold
Teen Titans
Codename Kids Next Door (Don't know it that is how you spell it)
Code Lyoko
Xiaolin Showdown
Little Bear
Timon and Pumba ( Watched it every night before I went to bed :D)
Animes: (Jap. Considers them cartoons)
DB, DBZ, DBGT
Yu-gi-oh Original - GX
Duel Masters
Battle B-Damon
Beyblade (Original)
Pokemon (All)
Digimon (Most)
(These are ones I grew up with, there are still a lot more, but newer)
There is one other show I use to watch every Satureday Morning, but I do not know what it was. It was based of Nascar I think, but it was called something else... maybe not, but I cannot remember.