The Office

Zeitgeist BBC2 comedy of 2004/2005, written by Ricky Gervais and Stephen Marchant in the tradition of The Larry Saunders Show and People Like Us.
A take on reality-documentary TV, following the fortunes of the employees of an office located on an Industrial estate in Slough. Primary focus was on the office manager - David Brent, played by Gervais himself.
The also made an American version with a completely different cast, which few thought was anywhere near as good as the English. The first episode was more or less a direct lifting of bits of the English series, but with time it got more original, and more funny. It was picked up by NBC for two additional series, and they're still making episodes.
Quite frankly if you don't already know all this then you haven't communed with a single human being in the Anglo-Saxon world for the past two years...