With a disclaimer that I haven’t seen a single episode of some of the ones on the list, Frasier wins it hands down, with Seinfeld/Taxi jostling for second place.
I would have voted for “The Patty Duke Show” but that ended almost 45 years ago.
Don’t see Third Rock on there, so I voted WKRP.
“Home Improvement” is a blatant omission, IMHO. It beat the pants off Seinfeld in the ratings when they were matched up head to head on Tuesday night. Slapstick gets no respect from critics, but Home Improvement had GREAT slapstick. Seinfeld had 4 self-involved people getting lost in parking garages. 
Of those listed, I voted for Taxi.
The Big Bang Theory gets better and better. In five years it will be on the list.
Benson… Oh, on the list? Seinfeld.
Gotta be Frasier for me. The quality of writing for that show really stands out imo.
I voted for Roseanne, because it was not only very, very funny (in the first seasons, anyway), but also very realistic. They had a family like mine. There was crap on the stairs, waiting to be carried up; there was a hand-crocheted afghan on the back of the sofa; the family wore the same clothes more than once; Roseanne and Dan argued over whether to pay the electric bill or the gas bill. On and on.
But if Night Court had been on the list, I’d definitely have been torn.
Arrested Development though I have only watched one season so far. I liked Seinfeld quite a lot too. A bit surprised there are so few votes for Curb your Enthusiasm; I thought it captured the essence of what made Seinfeld great while doing away with the more conventional sitcom stuff.
I voted Friends, but That '70s Show is severely underrated.
What? No Blackadder?
Perhaps this could be remedied with a cunning plan …
I’m tempted by the Simpsons, but I really don’t think it can be compared with “traditional” sitcoms. For humor, pathos, and a little trailblazing, I went with MASH.
It’s tough to pick one. There are some truly great shows on that list. I clicked Taxi first, then thought about Arrested Development for a few moments, considered a few others as well… before finally settling on The Simpsons.
Even though it’s obviously gone way, way down in quality, you just can’t deny its greatness for so long. How much it’s become ingrained in our culture. I just finished reading The Simpsons: An Uncensored, Unauthorized History, which probably had a lot to do with my decision. It really reminded me of how great that show was in its prime (and its prime lasted for a long time), and how influential it was.
The two latter shows are older than 30 years old, and Barney Miller’s run was mostly in the 70s.
Have you read this thread thoroughly? It has already been pointed out that this is for American sitcoms.
I would say Arrested Development, easily.
I think Seinfeld comes in first, with the Simpsons coming in a close 2nd. South Park has it’s moements, but it’s target audience is too narrow for me to really like it. Both writers are very talented and I feel they could be doing a lot better.
I really like the King of Queens, I wouldn’t call it classic, but it holds up well in reruns and I like the characters, it’s one of those comedies you can watch or listen to and it keeps you company
It was either Soap or 30 Rock. I love shows that are self aware.
“The Simpsons” was a great show for longer than Arrested Development and Taxi were shows, combined.
There’s a lot of great shows on that list but IMHO, “The Simpsons” is actually being tragically underrated in this thread. It is the best sitcom ever made, ever, in any country, in my humble opinion. Few shows have ever been funnier, and no funny show has ever been as influential AND as innovative AND as daring AND as subversive.
I voted Curb Your Enthusiasm based on the fact that I don’t think they’ve had a clunker season.
Runners-up:
MAS*H’s second half was no longer a sitcom but a half hour drama
Arrested Development had that wretched Wee Britain horror.
Roseanne had the lottery crap.
This was ultimately my reasoning, as well. (Except for me it was Larry Sanders Show and Taxi.)