My favourite burger bar does the 'Elvis Burger', its a home made burger in a lovely bun but with peanut butter and raspberry jelly on it... sounds gross but its actually delicious.
I used to think you colonials (joke
) were crazy with peanut butter and jam/jelly sandwiches but they are frankly awesome.
ditto PB and banana.
I remember seeing a documentary on Elvis at a friend's house about - god,what, 15 years ago now? They described "the food that killed Elvis" - peanut butter and banana sandwiches, fried in rich,creamery butter.
Needless to say, we went straight to the 24-hour Tesco to get the ingredients...