This month's show is a very special festive extravaganza recorded in front of a live studio audience at the BBC Radio Theatre in London. Liz Carr is the strict question mistress as two teams take part in a disability-themed quiz. Joining Mat Fraser on his team is deaf comedian Steve Day, and they take on Laurence Clark and actress Julie Fernandez. Plus, piano genius and 'human iPod' Derek Paravicini accompanies some carol singalongs, roving Rob Crossan meets members of the audience, and Mat gives the first ever performance of the Ouch Christmas single, 'Cripples at Christmas'.