Season 4

O'Neill and Teal'c risk their lives to keep the Replicator bugs from gaining a foothold on Earth, while Carter helps the Asgard fend off a Replicator invasion. A warring alien race offers to exchange their advanced technology for Earth's help in defeating their enemy.

1. 

   1. Small Victories (2)

   2000-06-30 · 44m

   O'Neill and Teal'c risk their lives to keep the Replicator bugs from gaining a foothold on Earth, while Carter helps the Asgard fend off a Replicator invasion.

2. 

   2. The Other Side

   2000-07-07 · 44m

   A warring alien race offers to exchange their advanced technology for Earth's help in defeating their enemy.

3. 

   3. Upgrades

   2000-07-14 · 44m

   A Tok'ra archaeologist arrives at the SGC with newly discovered technology, giving the SG-1 team superhuman powers.

4. 

   4. Crossroads

   2000-07-21 · 44m

   Teal'c is reunited with his lost love -- a woman who claims to have found a way to communicate with her symbiote and defeat the Goa'uld.

5. 

   5. Divide and Conquer

   2000-07-28 · 44m

   When a member of the SGC tries to kill a Tok'ra, it is revealed that O'Neill and Carter may be victims of an untraceable form of Goa'uld mind control.

6. 

   6. Window of Opportunity

   2000-08-04 · 44m

   O'Neill and Teal'c are caught in a time loop in the SGC, and must relive the same 10 hours over and over again.

7. 

   7. Watergate

   2000-08-11 · 44m

   The Russians recover a Stargate from the bottom of the ocean, and turn to the SGC for help when their experiments go awry.

8. 

   8. The First Ones

   2000-08-18 · 44m

   Dr. Jackson is taken captive by an Unas while on an archaeological dig. The SGC mounts a rescue operation, but discovers a danger of their own.

9. 

   9. Scorched Earth

   2000-08-25 · 44m

   SG-1 is caught in a conflict between two civilizations trying to colonize the same planet.

10. 

    10. Beneath the Surface

    2000-09-01 · 44m

    The members of SG-1 are used as forced labor in an underground alien facility after their memories are erased by the ruling elite.

11. 

    11. Point of No Return

    2000-09-08 · 44m

    SG-1 investigates a conspiracy theorist who has detailed knowledge of the Stargate program.

12. 

    12. Tangent

    2000-09-15 · 44m

    A test gone wrong leaves Jack and Teal'c marooned in space aboard a damaged prototype attack ship

13. 

    13. The Curse

    2000-09-22 · 44m

    When his former mentor dies, Dr. Jackson returns to his roots -- and discovers an ancient Egyptian artifact containing a Goa'uld parasite.

14. 

    14. The Serpent's Venom

    2000-09-29 · 44m

    SG-1 must stop Apophis and Heru-ur from forming an alliance of their powerful forces, while Teal'c is captured and tortured by the Goa'uld.

15. 

    15. Chain Reaction

    2001-01-05 · 44m

    SG-1 must adjust to a new commanding officer when General Hammond steps down -- but O'Neill discovers foul play behind the general's resignation.

16. 

    16. 2010

    2001-01-12 · 44m

    Ten years into the future, the former members of SG-1 must send a message into the past to prevent the extinction of the human race.

17. 

    17. Absolute Power

    2001-01-19 · 44m

    Jackson's teammates notice a disturbing change in him when he is reunited with the Harcesis child and given the Goa'uld genetic memory.

18. 

    18. The Light

    2001-01-26 · 44m

    SG-1 finds a deserted Goa'uld palace, where a beautiful device causes suicidal tendencies.

19. 

    19. Prodigy

    2001-02-02 · 44m

    Carter must help keep a promising young cadet from throwing away a future at the SGC. O'Neill and Teal'c encounter a dangerous life form at an offworld research base.

20. 

    20. Entity

    2001-02-09 · 44m

    The SGC is invaded by an alien life force that takes up residence in the base computer system -- and in Major Carter.

21. 

    21. Double Jeopardy

    2001-02-16 · 44m

    SG-1 must rescue an alien world from the Goa'uld -- with help from an unexpected source. Teal'c seeks revenge on the System Lord Cronus for the murder of his father.

22. 

    22. Exodus (1)

    2001-02-23 · 44m

    SG-1 helps to evacuate the Tok'ra to a new base -- but matters are complicated when a spy reveals their location to Apophis. The team attempts a daring plan to take out the Goa'uld's powerful fleet.