In 2007 the STS released the first original domestic sitcom — "Daddy's Daughters" (there were only adaptation before), and in 2010 TNT released "Interns (sitcom)" — the first sitcom, filmed as a comedy (unlike dominated "conveyor" sitcoms).Although styles of sitcom have changed over the years they tend to be based on a family, workplace or other institution, where the same group of contrasting characters is brought together in each episode.Although there have been a number of notable exceptions, Canadian television networks have generally fared poorly with their sitcom offerings, with relatively few Canadian sitcoms attaining notable success in Canada or internationally.According to television critic Bill Brioux, there are a number of structural reasons for this: the shorter seasons, typical of Canadian television production, make it harder for audiences to connect with a program before its season has concluded, and put even successful shows at risk of losing their audience between seasons because of the longer waiting time before a show returns with new episodes; the more limited marketing budgets available to Canadian television networks mean that audiences are less likely to be aware that the show exists in the first place; and the shows tend to resemble American sitcoms, in the hope of securing a lucrative sale to an American television network, even though by and large the Canadian sitcoms that have been successful have been ones, such as Corner Gas or King of Kensington, that had a more distinctively Canadian flavour.
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.
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.
Early sitcoms took the forms of recurring comedy sketches with running characters, which on national network shows often took the form of a broader variety show with vocal and instrumental music performances padding out a half-hour time slot.
The Jack Benny Program, a radio-TV comedy series that ran for more than three decades, is generally regarded as a high-water mark in 20th-century American comedy.