50 performers, 12 teams and four shows. Time to compete for the title of the Ultimate Sketch Act. The Great Big Sketch Off brings together some of the sketch circuit's favourite faces before mixing them up in a random fashion, sorting-hat style. We give them one day to write and rehearse some totally original material, before pitting them against each other. Previous shows have featured Late Night Gimp Fight, Idiots Of Ants, The Betamales, Clever Peter, The Three Englishmen, Toby, and The Gentlemen of Leisure.