Blurb on Wikipedia.
Baddiel and Skinner Unplanned (2000-2003, 2005) is a free-form talk show hosted by British comedians/personalities David Baddiel and Frank Skinner and produced by Avalon Television. Its concept was developed at the Edinburgh Festival Fringe, and had a run in the West End at the Shaftesbury Theatre in 2001.
The show features the two hosts sitting on a couch on-stage and responding to questions from the audience — at times rather seriously, but usually with bizarre digressions into satirical comedy. An audience member is chosen as “Secretary” and has the job of keeping a note of the topics covered on a white board. In practice, the personality of the secretary will also prompt many jokes — usually at his or her expense. At the end of the show Skinner asks either the secretary or the audience to choose between two song books, and to pick a page number between 1 and 20. This process determines which song is performed by the duo, performed by Skinner with Baddiel accompanying him on piano (or, on at least one occasion, acoustic guitar).