The office UK
Extras
Curb the Enthusiasm
South Park
Seinfeld
Ricky Gervais original mockumentary probably still the best cringe humor on tv, and Seinfeld the best Sitcom.
I would actual have a few danish comedy shows in my top 5, but i doubt they will be very fun to watch for a non danish audience. Timing, irony and characteristics often get lost in translation.