The lack of Thundercats automatically makes this a fail thread in my mind.

No Teenage Mutant Ninja Turtles as an option is just terrible.

Lack of Voltron is also disappointing.

Why, in 1994, none was better than 'The Tick!"

http://www.youtube.com/watch?v=cUW0lj5CfuQ

Visionaries, 13 episodes of toy selling goodness.

Startcom, another 13 episodes of toy selling goodness.

Bravestarr, 65 episodes of awesomeness.

Batman:TAS

I was a teen when they came on but I enjoyed Gargoyles and X-Men:

When I was younger I enjoyed The Gummi Bears, Duck Tales, Transformers, and GI Joe

80s:

90s:

There are so many great ones it is hard to choose. He-Man, Transformers, the Disney-cartoons, Spider-Man, Batman and X-Men are the ones that come to mind right now

Les Mystérieuses Cités d'Or (The Mysterious Cities of Gold), only 39 episodes, a really well built story, with great characters, an awesome soundtrack. It manages to be very enternaining and informative.