Guest Stars Gary Jones as Sgt. Walter Harriman Bill Dow as Dr. Bill Lee Ben Cotton as Dr. Kavanagh Christopher Judge as Teal'c Rob LaBelle as Mr. Coolidge Brendan Penny as Wraith Technician Scott Heindl as Wraith Leader Co Starring Chuck Campbell as Chuck Nickolas Baric as Hester James Chutter as Wraith Scientist Toren Atkinson as Dempster