Season 5, Episode 20 The Sentinel
First Aired: May 3, 2002
O'Neill turns to two convicted criminals to help repair an alien device that could be instrumental in the Goa'uld's attempt to annihilate the world.
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- Premiered: June 7, 2002
- Rating: TV-PG
- Premise: A military unit uses an ancient archway to travel the universe and battle alien parasites in this cult sci-fi adventure based on the 1994 film `Stargate.' Curmudgeonly Col. Jack O'Neill teams with an archaeologist, an astrophysicist and an alien to combat… (more)