第 8 季 共 20 集
播出时间：2004年7月10日
第 1 集 New Order (1)
播出时间：2004年7月10日
Carter and Teal'c go in search of the Asgard to try and save Colonel O'Neill, but discover that the Asgard's enemy has returned with a vengeance. The System Lords seek an alliance with Earth against a common enemy.
第 2 集 New Order (2)
播出时间：2004年7月10日
While the Goa'uld threaten to attack Earth, SG-1 and the Asgard make a last, desperate stand against the Replicators, which have captured Major Carter and invaded the last outpost of the Asgard civilization.
第 3 集 Lockdown
播出时间：2004年7月24日
The S.G.C. is put under quarantine after a mysterious infection leaves a Russian officer in the infirmary -- but the disease may not be a disease at all.
第 4 集 Zero Hour
播出时间：2004年7月31日
General O'Neill tries to settle into his new job, but faces never-ending crises - including the capture of SG-1 by the Goa'uld.
第 5 集 Icon
播出时间：2004年8月7日
Daniel is stranded on another planet after the team's arrival on an alien world sparks a violent civil war.
第 6 集 Avatar
播出时间：2004年8月14日
Teal'c is trapped in a virtual reality simulation, in which he must defend the base from a Goa'uld super-soldier incursion.
第 7 集 Affinity
播出时间：2004年8月21日
Teal'c becomes the chief suspect in a murder investigation after he moves into an apartment off-base. Carter considers her future with Pete.
第 8 集 Covenant
播出时间：2004年8月28日
A businessman threatens to expose the secrets of alien life to the world, forcing Stargate Command to bring him into the loop.
第 9 集 Sacrifices
播出时间：2004年9月11日
The impending wedding of his son is the least of Teal'c's worries when the Hak'tyl plan an uprising against the Goa'uld Moloc, driving a wedge between Teal'c and Ishta.
第 10 集 Endgame
播出时间：2004年9月18日
The Stargate is stolen, leading SG-1 to discover that the Trust has taken control of an advanced ship in orbit. Teal'c investigates a series of wide-spread Jaffa deaths.
第 11 集 Gemini
播出时间：2005年1月22日
A duplicate of Colonel Carter seeks help from Stargate Command in defeating the Replicator Fifth, who she claims has found a way to counter the Asgard's new weapon.
第 12 集 Prometheus Unbound
播出时间：2005年1月29日
After the Prometheus responds to a distress call from a Goa'uld ship, Daniel Jackson finds himself a captive when Earth's ship is stolen.
第 13 集 It's Good to Be King
播出时间：2005年2月5日
SG-1 comes to the aid of a world about to be invaded by the Goa'uld, only to discover that the local king is Earth's Harry Maybourne.
第 14 集 Full Alert
播出时间：2005年2月12日
Relations between the U.S. and Russia are strained when Russian military leaders claim that the U.S. government has been compromised by the Goa'uld.
第 15 集 Citizen Joe
播出时间：2005年2月19日
Jack is confronted in his home by an irate barber...who claims to know everything about the Stargate project and SG-1.
第 16 集 Reckoning (1)
播出时间：2005年2月26日
The Replicators begin a systematic attack of the Goa'uld, forcing Baal to come to Earth for help. The Jaffa Resistance risk their entire movement in an attempt to retake a holy city in Baal's domain.
第 17 集 Reckoning (2)
播出时间：2005年3月5日
The fate of the galaxy hangs in the balance as Sam and Jacob search for the only weapon capable of stopping the Replicator onslaught. O'Neill leads a defense of the S.G.C., while Daniel squares off against Replicator Carter.
第 18 集 Threads
播出时间：2005年3月12日
While Daniel finds himself in a mysterious diner suspended between death and ascension, Jacob's fate takes an unexpected turn, Jack and Sam consider their romantic lives, and Anubis unleashes his plan for galactic destruction.
第 19 集 Moebius (1)
播出时间：2005年3月19日
SG-1 travels back in time in a daring plan to steal a piece of Ancient technology from Ra, the powerful Goa'uld who ruled in ancient Egypt.
第 20 集 Moebius (2)
播出时间：2005年3月26日
With the timeline changed by SG-1's actions in the distant past, an alternate version of SG-1 must use the newly-discovered time ship to set things right.
