From Syfy's schedulebot:
STARGATE ATLANTIS - 5pm Weekday Rotation
Aug 17 The Brotherhood - Guest stars include Robert Davi, Paul McGillion, David Nykl and Dean Marshall.
Aug 19 Letters From Pegasus - Guest stars include Amanda Tapping, Paul McGillion, David Nykl, Ben Cotton, Gary Jones and Dean Marshall.
STARGATE ATLANTIS - Syfy Friday Rotation
Aug 21 01:00A Reunion - Guest stars include Christopher Judge, David Nykl, Aleks Paunovic and Mark Dacascos.
STARGATE SG-1 - 6pm Weekday Rotation
Aug 17 The First Commandment - Guest stars include William Russ and Roger R. Cross.
Aug 19 Cold Lazarus - Guest stars include Harley Jane Kozak, Wally Dalton and Kyle Graham.
(Season 4 Marathon next week on the 24th!)
Aug 17 03:00A Requiem
Stargate episode graphics courtesy of GateWorld.