Jam is a British experimental black comedy sketch show, created, co-written, produced and directed by Chris Morris. It was broadcast on Channel 4 between 23 March and 27 April 2000. It was based on the earlier BBC Radio 1 show, Blue Jam, and consists of an unconnected series of disturbing and surreal sketches, unfolding over an ambient soundtrack. Many of the sketches re-used the original radio soundtracks with the actors lip-synching their lines, an unusual technique which added to the programme's unsettling atmosphere, and featured unorthodox use of visual effects and sound manipulation.