After Carter zats Hoskins, her zat closes without the usual sound.
When Hoskins is trying to escape he shoots a hole in the door. The size of this hole changes between shots
When Teal'c first steps through the gate and sees all the dead Jaffa, the middle "dead" Jaffa moves.
In the scene when they storm the warehouse, the vial of blue liquid that Dr. Jackson picks up (which Sam at first thinks is nerve gas) comes from a case that has the label for radioactive materials. The label should have been the one used for bio-hazard materials.
Even if it had been VX in the warehouse, they wouldn't have been dead when Sam said they should have been. VX takes 1-3 minutes to kill someone, so not enough time had passed for them to be dead.
Davis: Hey, just because it's 3 a.m., doesn't mean it's not daylight on other planets. There could be a team coming in hot any second now.
Technician: Yeah... that's true.
(both stare at the gate)
Technician: So, coffee?
Technician: When it's late at night and there's not that many people around, do you ever get the urge just to, power up the gate and dial up another planet, just for a few minutes?
Davis: That would be a no.
Technician: Me, me... me neither.
Daniel: They'll never see it coming.
Jack: Which is one of the advantages of the totally insane idea.
Daniel: Yeah... where'd I learn that from?
Walter: (after the Stargate vanishes) Are we gonna get in trouble for this?
Daniel: I'd hate to be the guy who explains this to the President.
(Jack just glares)
Daniel: Is it just me, or does that look like an Asgard beam?
Sam: It does. Which makes no sense - why would they take our Gate?
Jack: Yeah. Usually they ask nicely before they ignore us and do whatever they damn well please.
Daniel: Wait a minute, you were going to get coffee?!? (technicians stare at each other) It's okay, I was just joking.
The technician Daniel looks at before he is sent to Osiris' ship and who later is standing on the crane with Siler when the gate is reinstalled is played by the German journalist Robert Vogel who has been reporting on both Stargate SG-1 and Atlantis for German Sci-Fi magazines ever since the show started.