Sitcom  A sitcom, clipping for situational comedy (situation comedy, occasionally, in the U.S.), is a genre of comedy centered on a fixed set of characters who carry over from episode to episode. Sitcoms can be contrasted with sketch comedy, where a troupe may use new characters in each sketch, and stand-up comedy, where a comedian tells jokes and stories to an audience. Sitcoms originated in radio, but today are found mostly on television as one of its dominant narrative forms. A situational comedy television programme may be recorded in front of a studio audience, depending on the programme's production format. The effect of a live studio audience can be imitated or enhanced by the use of a laugh track. During filming productions, the laugh track is usually pre-recorded. Critics disagree over the utility of the term "sitcom" in classifying shows that have come into existence since the turn of the century. Many contemporary American sitcoms use the single-camera setup and do not feature a laugh track, thus often resembling the dramedy shows of the 1980s and 1990s rather than the traditional sitcom. Other topics of debate have included whether or not cartoons, such as "The Simpsons" or "Family Guy", can be classified as sitcoms. The terms "situational comedy" or "sitcom" were not commonly used until the 1950s. There were prior examples on radio, but the first television sitcom is said to be "Pinwright's Progress", ten episodes being broadcast on the BBC in the United Kingdom between 1946 and 1947. In the United States, director and producer William Asher has been credited with being the "man who invented the sitcom", having directed over two dozen of the leading sitcoms, including "I Love Lucy," from the 1950s through the 1970s. There have been few long-running Australian-made sitcoms, but many US and UK sitcoms have been successful there. Sitcoms are a staple of government broadcaster Australian Broadcasting Corporation (ABC); in the 1970s and 1980s many UK sitcoms also screened on the Seven Network. By 1986, UK comedies "Bless This House" and "Are You Being Served?" had been repeated by ABC Television several times, and were then acquired and screened by the Seven Network, in prime time. In 1981, "Daily at Dawn" was the first Australian comedy series to feature a regular gay character (Terry Bader as journalist Leslie). In 1987, "Mother and Son" was winner of the Television Drama Award presented by the Australian Human Rights Commission.