I would just like to say that us Brits have contributed greatly to that fine edifice (careful...) that is the USA and I resemble Spaw's remark. However, given that Spaw is a colonial I'll attempt to elucidate on some of the cultural peaks scaled by our industrious nation, which you yanks might benefit from were some enterprising chap to bring them to your ample shores:

Eggy fingers
Snooker
ASBO's
Jellied Eels
Real chips
One half of Sigourny Weaver
Darts
Black pudding
That bloke with the dodgy accent from The Wire
That bloke with the great accent from The Wire
Mornington Crescent
Whelks
Civility in debate*


*If anyone disagrees with this they can eff right off.