I am born and raised American, and I have no idea why you all find our accents even amusing :)
Everyone here is obsessed with British and Australian/Kiwi accents.
Why is it "charming"? Not that I'm not flattered :)
p.s. you're answering to a girl who didn't even know...
and all of a sudden I found the American accent sounding soooooo nice to my ears, although I was not sure what is different about his accent ... but I am sure all Americans should speak that accent O.o