It seems that one TV show just wasn't enough for our favourite boy from Boyle, so tonight sees Chris O'Dowd returning to the small screen for Christopher Guest's Family Tree. This spoof tells the tale of Tom Chadwick, a young man who is rather surprised to learn that he's been bequeathed an old chest of curios by his great-aunt Victoria, whom he and his sister Bea don't remember ever meeting. He finds a rather interesting photo inside, and sets off on a rather humorous voyage of discovery.