I just saw an old stand-up routine by a comedian called Frankie Boyle (here he is in all his gingerness):

He opened his act with the following gag:-

"Do you remember years ago when they were making Braveheart and everyone said 'Oh it's ridiculous Mel Gibson playing a scottish guy, that's not going to be very convincing!'

And look at him now.....

.....an alcoholic racist."

Bwahahahahahahahahahaha! Hats off sir! :)