Boards
List of television series cancelled after one episode
http://en.wikipedia.org/wiki/List_of_television_series_canceled_after_one_episode
The Melting Pot
1975 BBC sitcom written by Spike Milligan, who also starred as 'Mr. Van Gogh' a Pakistani illegal immigrant in London. The first episode was shown on BBC1 on June 11, 1975, but the remaining five have never been seen.