When Teal'c visits the armory in his fourth time in the simulation, the word on the door is spelled the British way: armoury. Although this is probably because the company who created the CG shots is from Australia, a member of the British Commonwealth, a U.S. military base wouldn't have it spelled this way.
When Teal'C is telling virtual Sam and Daniel that there is still a threat on the base, Daniel says Sgt. Harriman told them that only two made it on the base before he died. Yet, a few moments later, Harriman comes on the intercom.
At the beginning when Jack was shot by the drone, there is a small flame on Jack's shirt, but no burns or scorch marks.
The doctor pulls out the syringe sideways and you can see there is no needle
Jack: There we go. Just make sure there's a beginner's level for the rest of us.
Dr. Lee: Oh yeah, we can always make it easier... not-not that we'd have to, for you, certainly. I mean, for others, but you-you'd be fine, uh...
(Dr. Carmichael jams an adrenaline shot into Teal'c's chest)
Dr. Carmichael: That won't work again!
Jack: I don't want to see that again!
Teal'c: We have won.
Jack: That's what we do.
Sam: Sir, you may have done it again.
Jack: Yes. (long pause) How did I do it this time?
Jack: You know, I always thought a failsafe system was supposed to be safe... from failure.
Dr. Lee: (on how to improve the realness of the virtual combat simulator) Well maybe... we could... mmm... maybe it could use a little more work.
Jack: Can you make it harder, more difficult?
Dr. Lee: Well we could input parameters for different scenarios, but the vast majority of the simulation array comes from the mind of the user. The programing is actually built by interfacing memories from the individual's consciousness with the chair's matrix.
Jack: Carter, all I heard was "Matrix," and I found those films quite confusing.
(Teal'c has just finished a virtual combat training)
Dr. Lee: Simulation time 49 seconds!
Jack: Was it fun?
Teal'c: Indeed. You died well in battle, O'Neill.
Jack: Obviously there's something defective with this thing.
The computer graphics in this episode were done by Sydney-based Perception, the same company who was working on the first officially licensed Stargate SG-1 video game that was due out on the PC, XBox and PS2 in late 2005. The game was subsequently cancelled.
Due to (presumably) the excessive violence, this episode was rated TV-14V instead of TV-PG.
Andrew Airlie (Dr. Carmichael) previously played the Orbanian Kalan in the season three episode "'Learning Curve."
Sam asks Teal'c if he's ever played Doom (an early first person shooter for the PC), to which he replies "I play Def Jam Vendetta". In Def Jam Vendetta (a fighting game for PS2, Xbox and GameCube), Christopher Judge (Teal'c) voices D-Mob, the main villain in the game.
Sam: You've played Doom.
Doom (1993) is a first-person shooter, computer game. Its graphic and interactive violence has made Doom the subject of much controversy reaching outside the gaming world. The doom franchise includes: Doom II: Hell on Earth (1994), The Ultimate Doom (1995), Final Doom (1996), Doom 3 (2004), and the motion picture, Doom (2005).
Teal'c: I played Def Jam Vendetta.
Def Jam Vendetta (2003) is a professional wrestling video game, released for the PlayStation 2 and GameCube. In the game, Christoper Judge voices the character of the underground boss, D-Mob. Vendetta was followed by a sequel called Def Jam: Fight for NY.
Jack: Carter, all I heard was 'Matrix', and I found those films quite confusing.
The virtual reality simulator, the slow turns in the game, and Daniel's prophetic abilities in the game are all references to The Matrix. O'Neill's comment about The Matrix being confusing is also a reference.