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Curry and Chips
Arguably one of the most underrated British sitcoms of all time. Unfortunately misconstrued as slightly racist in some quarters, although when you look a little closer it's actually poking fun at some of the more bigoted views held by Britons at the time - the show's protagonist, Kevin O'Grady, is generally smarter than those trying to keep him down, and always gets the upper hand.
Anyways, I think all six episodes are on Youtube, it's certainly worth a watch if you want a laugh, or even just to gain an insight into the history of UK comedy.
Episode one here: http://www.youtube.com/watch?v=NlB3qEm1gOs