Spider-Man: the Animated Series.
I'm also glad Huboom's got Batman and Superman on the air as well as Transformers G1 & GI Joe: A Real American Hero. I still can't believe that I remember watching CardCaptors because I don't remember a single thing that happened in it which sucks.
Stuff I'm glad I remember however include Space Ghost Coast 2 Coast, Cartoon Planet, Mike Lu & Og, Sheep in the Big City, Megas XLR, and Teen Titans...holy crap, I also remember watching The Cramp Twins on another channel.
For Disney, it's the cartoons that had Winnie the Pooh in it (particularily the New Adventures of Winnie the Pooh), Rolie Polie Olie, PB&J Otter, Buzz Lightyear of Star Command, Madeline, Pepper Ann, and Recess. I'm leaving out the more well known ones.
As for Nick, I got Rugrats, Rocket Power, SpongeBob, Doug, Ren & Stimpy, Rocko's Modern Life, Hey Arnold, the Angry Beavers, Oh Yeah Cartoons, the Wild Thornberrys, KaBlam and CatDog.
Some of the others I remember watching from other channels include the Simpsons, King of the Hill, Beavis and Butthead, and Daria.
Right now, it's Adventure Time, Gravity Falls, Regular Show, and Transformers Prime.
"Declare the past, diagnose the present, foretell the future; practice these acts. As to diseases, make a habit of two things — to help, or at least to do no harm."
KR Series Finished: Kuuga, Agito, Ryuki, Faiz, Blade, OOO, Fourze, Wizard
No. of Combat Arms Unbelievables: 3