Martin Lloyd (Willie Garson) makes his second appearance in Stargate SG-1, but he has forgotten who he is! And Jack as well.
But in his ignorance, he started trying to write what he loves - Science Fiction. And what subject does he pick? He creates a story about a Round thing, Flushes Sideways, that flings people and things to other planets across the galaxy- And a team of stalwart explorers who don't necessarily have "Colonel" on their uniforms. Unfortunately, the Science Fiction publishers have all rejected his story, leaving - A TV Show Pilot!
"Wormhole X-Treme" is the making of a show-within-a-show (Because "Shows with X in the name get higher ratings", Feh), of course The DeLuise Brothers Peter and Michael, reunited years after 21-jump street, are the magic behind this inane 100th Episode- Peter being the one who directed it.
Willie Garson is at his funniest here, I think he mostly plays himself for any role he takes on. His "alien co-crew" are also back, and the question is has Dr Tanner (Robert Lewis) started giving Martin his "forget-drugs" in Vitamins now? In Fact, the underlying alien-story beneath "Wormhole X-Treme" is not what it appears to be - Does Dr. Tanner have malicious intent? I don't think he did in the first episode he appeared in, just self-preservation and identity. But his motive here, has to be left for you to find out as you watch and giggle your way through the one-liners and especially where Teal'c has obviously eaten ALL of the donuts the caterer has left.
The N.I.D. is back as well, and they want something, something too big for them or anyone else to handle. And they are no match for Carter and Jackson.
We actually get a good look at "Bridge Studios" of Canada, where SG-1 was filmed. Fortunately, Bridge is right next door to "Abydos"- Or any other Desert World SG-1 has been to. So we get to see SG-1 sets in various states of redress, including the inside of a Goa'Uld Mothership set.
If Wormhole X-Treme had been made into a real show, I would have watched it! There is some great "History" of the Stargate Franchise at the end of this Episode as given by "Dr. Levant"/Raymond Gunne (Christian Bocher).