By which I mean is still funny, and has a minimal amount of jokes which aged poorly (not stuff that aged poorly from stuff they couldn't have known about, such as a joke about someone dying in a certain way, but then someone later died in a similar way, but aged poorly due to how problematic they are).
Nobody's mentioned Monty Python yet -- or, closely related, Fawlty Towers. There's a lot of good British comedy. Off the top of my head: Mr. Bean, Yes Minister/Yes Prime Minister, and Look Around You are a few other shows I love.
American sitcoms I love include the first 8 to 10 seasons of The Simpsons. I'm also always trying to sell people on Mission Hill, a short-lived animated sitcom created by former Simpsons showrunners Bill Oakley and Josh Weinstein.
deleted by creator
I want to say Yes Minister is a documentary, but honestly if I could press a button and make the UK government and Civil service half that humane and competent I'd mash it so damn hard.