Backed by the Pentagon: Which has resulted in Richard Dean Anderson (Jack O'Neill, two Ls) being made an honorary Brigadier General.
Studio Hop: The original film was produced by Carolco Pictures and France's StudioCanal, with Metro-Goldwyn-Mayer distributing theatrically. Not long after, Carolco went under and StudioCanal purchased their library; the film was distributed on video by Live Entertainment, which became Artisan and then became part of Lionsgate (which continues to license the Carolco library for home release). The TV series and DTV spinoff films have gone through MGM exclusively; Carolco had sold them the rights to raise money for Cutthroat Island (which wound up being the movie that brought down Carolco).
What Could Have Been: An outright crossover between Stargate and Dark Matter (2015) (which shares the same showrunners) via the Blink Drive came very close to being made at MGM post-cancellation when MGM's new streaming service Stargate Command was launched.