We've gone from UKIP surge to Brexit shambles, from horsemeat in lasagne to Donald Trump in the White House, from Woolworths going under to all the other shops going under. It's probably socially irresponsible even to try to cheer up. But if you're determined to give it a go, you might enjoy this eclectic collection (or eclection) of David Mitchell's attempts to make light of all that darkness. Scampi, politics, the Olympics, terrorism, exercise,...