Batman Animated series.
Doug.
Rugrats.
Kablam.
Ed, Edd and Eddy.
Ah! Monsters.
The Magical Schoolbus.
Spongebob.
Angry Beavers.
Spidermand animated series.
X-men animated series.
Rocko's modern life.
Cow and Chicken.
Spongebob
The Powerpuff Girls
Dexter's Laboratory
Hey Arnold!
Courage the Cowardly Dog
Johnny Bravo
The Grim Adventures of Billy and Mandy
Codename: Kids Next Door
Rockos modern life, Hey Arnold, Spongebob, Fairy Odd Parents, Camp Lalzo, Fosters Home, Ed Edd n Eddy, Kim Possible, Rocket Power, Doug, Dexter's Lab, Power Puff Girls, Code Name Kids Next Door, Grim Adventures of Billy & Mandy, Cow & Chicken, Johnny Bravo
Dexter's lab.
Disney's fillmore (amazing series)
Jimmy neutron
Bear in the big blue house
Teen titans
Batman Beyond
Spiderman the new animated series (MTV)
Fairly Oddparents
Rugrats (although I liked all grown up more but seems like I'm in minority)
The Magic School Bus
hi hi puffy amiyumi
American Dragon: Jake Long
Those are my fav. ones for sure but if I could include anime in that list then Pokemon/DBZ/Cardcaptor Sakura/Beyblade/Zatch Bell/Medabots & inuyasha would make the list as well.
Rugrats
Dexter's Lab
CatDog
Powerpuff Girls
Scooby Doo
Batman the animated series
Kim Possible
Tom and Jerry
The Wild Thornberrys
X-Men the animated series
Johnny Bravo
Teenage Mutant Ninja Turtles
Ed, Edd and Eddy
Hey Arnold
Looney Tunes