While kids cartoons and Saturday morning television seem to be a bigger bunch of crap today, I can't say the same for prime time cartoons. The Simpsons and Futurama are two of my favorite "sitcoms" of the past decade or more. Simpsons has to be about #1.
King of the Hill is also great, and I got a kick out of Bevis and Butthead at the time.
Charon