Sure, the penny CGP Grey is talking about might be the American one cent coin, but the same goes for our pretty much useless 1p coin. When was the last time you saw a vending machine take less than a 5p coin? And all those crummy £0.99 sales tactics -- that's £1 whichever way you carve it up -- who cares about that 1p you're potentially saving?
I'm all for abolishing the 1p coin, and while you're there, take out the 2p coin too, OK? [YouTube]