Ok, time to toss in my input as I was mesmerized by the TV.
Old stuff:
Roadrunner
Might Orbots
Voltron (lions naturally)
Transformers (remember the return of Optimus Prime?)
Robotech (didn't care for Southern Cross all that much)
GI Joe (I remember Cobra-La as well as *ugh* GI Joe Extreme)
Thundarr the Barbarian (Lords of Light!)
the Real Ghostbusters (Lorenzo Music was Peter Venkman not Dave Coulier! also Collect Call of Cthulhu)
Extreme Ghostbusters (Tara Strong voiced here too)
the Incredible Hulk / Amazing Spider Man show (guest starred the X-Men!)
the first few episodes of TMNT
the newer Superfriends (Darkseid was obsessed with Wonder Woman)
Thundercats
Silverhawks (remember that?)
Space Usagi (Usagi Yojimbo's descendant but unfortunately never made it past a teaser trailer)
Pryde of the X-Men (based a 6 player quarter eater off it!)
More recent stuff:
X-Men (unfortunately Nightcrawler was only a guest)
X-Men: Evolution (da fuzzy elf and Todd "Toad" Tolensky's theme!)
Tiny Toons (there's a parody of the theme involving Cthulhu and friends)
Beast Wars (I liked it better than Beast Machines, especially since Fox didn't carry the later seasons)
the Incredible Hulk (Cree "Numbah Five" Summers as the She-Hulk and Kathy Ireland as Ogress!)
SpiderMan (not the one on EmptyV)
SpiderMan Unlimited
Gargoyles (aka Star Trek: the Next Generation)
Darkwing Duck (I am the terror that flaps in the night! I am the ingrown toenail on the foot of crime!)
new Johnny Quest (with Race Bannon's hot daughter

)
Samurai Jack
Johnny Bravo (the Scooby gang crossovered!)
Jackie Chan Adventures (Got me talking like Uncle to my nephews "One more thing...")
Kim Possible
Powder Puff Girls (That's Power Puff! No 'D'!)
Shaman King (don't squeeze the shaman)
the NEW TMNT (back to old Eastman & Laird and Raph sounds like he's from the Bronx)
Dragon Ball
"Drag ON" Ball Z (morbid curiousity mostly but the fights weren't too bad)
Teen Titans
Justice League
Superman & Batman (the Timm versions)
Batman Beyond (Mr Freeze returns!)
Cowboy Bebop
Ruroni Kenshin
Mucha Lucha (It's a way of life!)
Ultimate Muscle (must be the wrasslin' fan in me or the fact I collected M.U.S.C.L.E. Things in the 80's)
Dexter's Laboratory (earlier seasons before the character retooling. Ugh.)
I know I'm missing a few but I think my lists are long enough.
