Michael Rosen presents another programme about words and the way we speak. 4: Sitting on Sigmund Are you draped over a Henman, plumping up a Sigmund or trying to find your remote down the back of the Matisse? The naming of sofas explained. And with Tolkien in the cinemas, riddles Anglo-Saxon style. Producer Mark Burman. Repeated Sunday 30 December 8.30pm