I saw a bunch of the British episodes about a year ago during a BBC marathon, but my first exposure to the American Office was at my friend's house 2 weeks ago when, and I was instantly in love. The Office
is pretty much the funniest show to emerge in a long time. It's definitely up there with Seinfeld and Futurama.
The BBC version was definitely better at being non-stop awkward (something both shows are), but I prefer the American version more because I like the characters more.
Everyman Jim and the lovely Pam. (Who I totally have a crush on.)