Stargate SG-1 (1997–2007)
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1:05 | Trailer
Ready to go on vacation, O'Neill is beamed away by the Asgard. Thor tells him that Earth is faced with an enemy even worse than the Goa'uld.


Martin Wood


Brad Wright (developed for television by), Jonathan Glassner (developed for television by) | 1 more credit »





Episode cast overview:
Richard Dean Anderson ... Colonel Jack O'Neill
Michael Shanks ... Dr. Daniel Jackson / Thor
Amanda Tapping ... Major Samantha Carter
Christopher Judge ... Teal'c
Don S. Davis ... Major General George Hammond
Colin Cunningham ... Major Paul Davis
Gary Jones ... Sgt. Walter Harriman
Guyle Fraizer ... Technician #2 (as Guyle Lee-Fraizer)


While taunting Carter leave means leaving to have fun, not staying behind for more research, Jack is suddenly beamed aboard the spaceship of the Asgard Thor, who explains he is dying, and his ship falling victim in the war against the replicators, an all-infesting kind of mechanical bugs which literally devour to multiply, the transport and self-destruction mechanisms are now also disabled but their next target will be earth if they manage to land. Jack contacts SGC, asking advice and forbidding SG-1 to join him, but they do after the general overrules the colonel, assuring him they have a way back. After Sam makes sense of Thor's notes about the 'techno-bugs' and discusses them with him, she comes up with a plan to explode the ship and the bugs and escape by stargate, but it depends on meticulous timing and Teal'c placing explosives at the outside, which proves even more dangerous then it sounds... Written by KGF Vissers

Plot Summary | Add Synopsis

Plot Keywords:

spaceship | See All (1) »


TV-PG | See all certifications »



USA | Canada



Release Date:

10 March 2000 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Stereo | Dolby Digital (Dolby 5.1)



Aspect Ratio:

16 : 9
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Did You Know?


Michael Shanks character Daniel Jackson says "I feel like I should be up there with them". Michael Shanks also voices Thor, who is up on the ship with the rest of the team. See more »


The Asgard ship is said to be entering the atmosphere on a heading of 196 but on screen is heading north east. See more »


Thor: The Replicators were brought aboard an Asgard ship, for study, before the danger could be fully comprehended.
Jack O'Neill: We do that all the time. Kind of expected more from you guys.
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Crazy Credits

The opening credits for this episode are identical to that of the original pilot episode-- a full slow pass over a symbolic statue of Ra, which had been taken from the original movie, rather than the montage of clips illustrating the actors and their roles-- despite this being the final episode in the third season. See more »


Featured in Stargate SG-1: Small Victories (2000) See more »


Main Title
Written by Joel Goldsmith and David Arnold
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User Reviews

Nice Vacations
5 May 2016 | by claudio_carvalhoSee all my reviews

The SG-1 is on vacation: Daniel has just operated appendicitis; Teal'c is visiting his son in another planet; Sam is entertaining with researches; and Jack is seeking company to go fishing in Minnesota. While inviting Sam, he is unexpectedly beamed aboard the Bilskimir, the Asgard Thor's spacecraft. He sees mechanical bugs and learns that Thor is dying. He explains to Jack that the creatures are the dangerous Replicators that ingest metals alloys to replicate. Further, Thor has destroyed the transport so that nobody can leave the Bilskimir that is heading to Earth. Jack contacts the SGC and requests explosives to blow up the Bilskimir and gives direct orders forbidding Sam and Teal'c to join him. However, his friends arrive in the spaceship since General Hammond overruled his orders. How might they survive without means of transportation?

"Nemesis" is among the best episodes of "Stargate SG-1". The story has a perfect combination of sci-fi, action and comedy with Jack completely inspired with excellent lines. The show would be well- resolved but the last scene forces the story to be continued. My vote is nine.

Title (Brazil): "Nemesis"

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