For viewers in the UK, here's the BBC iPlayer link for Graeme's appearance on "Pointless Celebrities", which aired on BBC One last evening:

http://www.bbc.co.uk/iplayer/episode/b03l2qp5/Pointless_Celebrities_Series_5_Episode_9/

For viewers in the UK, Graeme Garden will be appearing in the show "Pointless" on BBC One on Saturday, 14th December at 17:50. 

Here's an episode summary: "Alexander Armstrong and Richard Osman present a special celebrity academic edition of the general knowledge quiz in which four teams try to come up with the answers that no-one else could think of. Featuring Clemency Burton-Hill and Graeme Garden, Dan Snow and Susie Dent, Robert Peston and Steph McGovern, and Michael Mosley and Germaine Greer."