I loved Ren and Stimpy, I had two Guinea Pigs named after them. lol.
Cat Dog, Doug, Captain Planet (god, I'm old), Animaniacs, and I loved those Disney Sing-Along-Song movies.
catdog, rocko's modern life, and rugrats were some of the earlier ones for me.
but then i really got into the wild thornberrys, pokemon, and spongebob!
Scooby Doo, Two Stupid Dogs, and Angry Beavers were my favorites, though I watched pretty much anything on CN/Nick. Then pre-teen years I liked Pokemon, Dragon Ball Z, and all the Toonami stuff. Nowadays... Archer and Bob's Burgers? heh
Scooby doo, Naruto, Pokemon, and Kids Next Door mostly. There were more I'm sure but those are the only ones that I remember. Oh, and Dexter's lab and foster's home for imaginary friends.