Community, Happy Endings, New Girl and 30 rock are genuinely really good, often hilarious sitcoms. I've heard the U.S Office, Parks and Rec, It's always sunny in Philadelphia and Modern Family are all excellent as well.
Compare that to here, in terms of good comedies in recent years we've had The Office, Extras, Inbetweeners and Peep Show. All we have left right now is Peep Show and thats on its 8th series. British Comedy really needs a kick up the arse. America make a load of shit, but they also seem to have some real gems in there too. Over here we produce the same amount of shit with far less gems.
Compare that to here, in terms of good comedies in recent years we've had The Office, Extras, Inbetweeners and Peep Show. All we have left right now is Peep Show and thats on its 8th series. British Comedy really needs a kick up the arse. America make a load of shit, but they also seem to have some real gems in there too. Over here we produce the same amount of shit with far less gems.

