12:03Colin Murphy's Great Unanswered QuestionsSeries 402/04/2011BBC Radio Ulster Duration: 30 minutes Sat 2nd Apr 2011, 12:03 on BBC Radio UlsterColin Murphy and resident know-alls Dr David Booth and Matthew Collins are joined by the best Irish and British comedians to ponder the ridiculous and answer the unanswerable.GenresComedySketchBrandColin Murphy's Great Unanswered QuestionsSeriesColin Murphy's Great Unanswered Questions: Series 4 Source: BBC Online