Season 5 Episode 12 - Wormhole X-Treme!

Martin from "Point of No Return" has amnesia again, but has managed to become a TV "creative consultant" by selling a script from his vague memories of SG-1. The government approved the go-ahead for the show as a cover for their covert SG organization, but now the ship that Martin and his fellow aliens came in on is heading back to Earth. Jack goes undercover as a military consultant for the show, Wormhole X-Treme! ("Because shows with an "X" in the title do better in the ratings"). Martin's other aliens are after him as well, and send Sam and Daniel on a path that intersects with the NID. It turns out Martin gave himself amnesia to forget the devastation that had destroyed his home planet, and his fellow aliens want the control device back so they can take control of the pre-programmed ship when it arrives back on Earth. Jack eventually turns the control device over to the aliens, but Martin chooses to stay behind to take advantage of his newfound fame now that the show's crew have footage of the alien ship arriving.