I have all 3 seasons on my HDD and its really funny... "Hello, IT, have you tried turning it off and on again?"
For all who can't watch Unclefragger's link, I uploaded the first episode for a study colleague, feel free to load it as well: http://dl.getdropbox.com/u/106558/S01E01%20The%20IT%20Crowd%20-%20Yesterday%27s%20Jam.avi. But hurry up, I will delete it in a few days... There was a German ripoff on Sat.1, which is very bad (Pilot episode compared on Youtube). Fortunately Sat.1 noticed this and cancelled the ripoff after two episodes
And when you are done with IT Crowd, there is another geek series from the US: The Big Bang Theory. More geek PhD Physics than IT Staff, but also really funny.
PS@Unclefragger: Have you seen this? http://www.reynholm.co.uk/, http://www.reynholm.co.uk/~moss/ and http://www.friendface.org/