As it's Christmas Eve all day and gremlins have hitherto prevented me opening some of the windows of this advent calendar at the correct time, we end with a bumper rollover jackpot of clips, chosen largely out of pure selfishness. We kick off with Martin Alan Feldman and John Junkin with the George Mitchell singers, rewriting 'The Whiffenpoof Song'. My good friend Gavin Sutherland showed me this sketch during a mammoth session of port and brandy at his luxury Wanstead penthouse flat over a decade ago, and it's been in my pantheon of TV greatness ever since. Not least because the end credit is sung. Take it away, ladies and gentlemen.