This was inspired by my contest, wasn't it? :D
My list would look something like this. Bear in mind, I have a pretty loose definition of the term "sitcom"!
1) Arrested Development
2) Frasier
3) Archer
4) The Simpsons
5) All in the Family
6) Malcolm in the Middle
7) The Boondocks
8) Parks and Recreation
9) Seinfeld
10) Sanford and Son
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[NO BARKLEY NO PEACE]