Robert Webb and David Mitchell star in a series of daft but intelligent sketches in That Mitchell and Webb Sound. This week the ideas factory behind Strictly Come Dancing reveal the secret to creating hit TV shows - take the title of a moderately successful film and replace the last word with the name of an old TV programme. Future hits to look out for include The Shawshank Rentaghost and Lock Stock and Two Smoking Footballers Wives. Also among this week's sketches, problems arise over how to talk like a Roman emperor; there's a ground breaking interview on how to count whales; we meet a man raised by a family of wasps; and we visit the only Orthopaedic supplies company in Britain to have its very own portal to another universe. David Mitchell and Robert Webb are joined by James Bachman, Sarah Hadland and Olivia Colman in That Mitchell and Webb Sound. The Producer is Gareth Edwards.