Brit Comedy I've always felt is the gold Standard. Historically whether that be Monty Python (and theres nothing like it ever and it has to be the best comedy ever made) Fawlty Towers along with it for gold standard.
But others in no particular order:
The Young Ones
Royle Family (has nothing to do with royals)
Absolutely Fabulous
Rising Damp
Mr Bean
Spitting Image
The Two Ronnies
Not the 9 O clock News
French and Saunders
Black Books
Black Adder
Father Ted
Bottom
Friday Night Dinner
Inbetweeners
Then a lot of the Britcoms that got reinvented in US such as
Steptoe and Son'
The Office
Man about the House
Till Death do us part.
I'm probably forgetting a lot, theres so many. Always loved Brit comedy, keep going back to it. A zaniness that you don't often see in US formulaic comedy.
In terms of comedy I've always felt I live on the wrong continent. I would trade brit comedy programming for almost anything here. My favorite US comedies of all time would be All in the Family, MASH, Happy Days(first seasons), The Office, Seinfeld. That said I take the Beatles over Seinfeld any time.