Back in 1994, a science fiction movie from the team of Dean Devlin and Roland Emmerich called Stargate was released. Starring Kurt Russell, well settled into his post-Escape from New York action-hero phase, James Spader, a hip young actor who blew the world away in sex, lies, and videotape, and Jaye Davidson, fresh off his OMG, SPOILERS! turn in The Crying Game, the movie was something less than a howling success. Devlin and Emmerich reworked their planned sequel into a separate film (Independence Day), and were so unconcerned with this particular property that they sold the rights to do a TV show and didn’t even require that the series credit them or their movie as the basis of the series.
In 1997, Stargate SG-1 debuted on Showtime. Spinning out of the movie, it recast with a post-MacGyver Richard Dean Anderson as O’Neill and Canadian actor Michael Shanks as Jackson, and added Amanda Tapping, Christopher Judge, and Don S. Davis. The show lasted five seasons on Showtime, and then was picked up by SyFy (then called the Sci-Fi Channel), for which it was a huge hit, prompting two spinoffs, Stargate Atlantis and Stargate Universe. When SG-1 ended after ten seasons, it prompted two direct-to-DVD movies.
Not bad for a spinoff of a failed movie, huh?
[Unscheduled offworld activation.]