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.
Episodes
1 Small Victories (2) Jun 30, 2000 
2 The Other Side Jul 7, 2000 
3 Upgrades Jul 14, 2000 
4 Crossroads Jul 21, 2000 
5 Divide and Conquer Jul 28, 2000 
6 Window of Opportunity Aug 4, 2000 
7 Watergate Aug 11, 2000 
8 The First Ones Aug 18, 2000 
9 Scorched Earth Aug 25, 2000 
10 Beneath the Surface Sep 1, 2000 
11 Point of No Return Sep 8, 2000 
12 Tangent Sep 15, 2000 
13 The Curse Sep 22, 2000 
14 The Serpent's Venom Sep 29, 2000 
15 Chain Reaction Jan 5, 2001 
16 2010 Jan 12, 2001 
17 Absolute Power Jan 19, 2001 
18 The Light Jan 26, 2001 
19 Prodigy Feb 2, 2001 
20 Entity Feb 9, 2001 
21 Double Jeopardy Feb 16, 2001 
22 Exodus (1) Feb 23, 2001