A lot of people saying they can only think of 2-3 american sitcoms that they actually rate. Amazing considering the half baked shite we've produced in the UK in recent years.
The Simpsons
American Dad
Frasier
Modern Family
Nathan For You
3rd Rock From the Sun
Friends
30 Rock
American Office
Rick and Morty
Happy Days
Cheers
Bilko
Beavis and Butthead
King of the Hill
The Life and Times of Tim
Curb Your Enthusiasm
South Park
Family Guy
The Fresh Prince of Bel Air
Community
Arrested Development
Seinfeld
Off the top of my head...