 John Cleese confirmed at the 30-year reunion in May 2009 that they will never make another episode of the comedy because they are "too old and tired" and expectations would be too high.In a television interview (shown in Australia on Seven Network and the Australian Broadcasting Corporation) on 7 May 2009, Cleese also commented that he and Booth took six weeks to write each episode.In 1977 and 1978 alone, the original TV show was sold to 45 stations in 17 countries and was the BBC's best-selling overseas programme for that year.