Hosting knockabout comedy quizzes is a useful sideline for Alexander Armstrong. But despite being the most comfortable host of Have I Got News for You, he doesn't always strike gold (Best of the Worst, Don't Call Me Stupid). Maybe this quiz pilot will change his fortunes. Contestants (Robert Webb, Katy Brand and Griff Rhys Jones) gain points for devising a question that will flummox the others, while Dave (Come Dine with Me) Lamb chips in from the "Fact Bunker". It's more Reithian than the average panel show, but the best bits are the detours: Webb goading Armstrong with "I like it when you do your One Show voice", and Jones looking peeved with a low score for one of his jokes.

Who doesn't like Alexander Armstrong? The suave comedian is one of the best guest hosts to have sat in the Have I Got News For You hot seat, and his daytime quiz show Pointless is an underrated treat. This week, Mr. Armstrong (or 'Xander' to his friends) takes the helm of new panel show Big Ask, in which contestants gain points for devising a question that baffles their opponents. It's always nice to see Dave branching out into original comedy, so we're willing to give this one a go.