Trivia: During a scene in the derelict building Teal'c and Ally are hiding in, you'll notice significant graffiti on the walls. In one shot, there is visible graffiti on the right-side wall, with the word "F*CK". Also, earlier in the episode just before SG-1 are initially attacked by the giant insects, you can see traffic driving by in the background, through the windows of the glass building.
Citizen Joe - S8-E15
Trivia: In this episode, Joe is played by Dan Castellaneta. Castellaneta is the voice of Homer Simpson (and other characters) from "The Simpsons." One of Jack O'Neill's favorite TV show is "The Simpsons."
Trivia: In this episode, Orlin is a powerful ascended being of energy who becomes human, but then is ascended again and once again becomes a powerful being of energy. This episode also introduces Frank Simmons, played by John de Lancie. Lancie played Q in Star Trek: TNG, a powerful being of energy who becomes human (as punishment) and then once again becomes a powerful being of energy.
Revelations - S5-E22
Trivia: The voice of Heimdall was done by Teryl Rothery, who plays Dr. Janet Fraiser.
Trivia: The voice of Loki is provided by Peter DeLuise, the director of many SG-1 episodes, including this episode.
Trivia: Near the end when the alien ship is being filmed, Martin says they (Wormhole Extreme) are going to win an Emmy for this, visual effects category. At that point in the series, Stargate SG-1 had been nominated for 5 Emmys (4 in the visual effect category) but never won. The show went on to receive 4 more Emmy nominations in the visual effect category, without ever winning an Emmy.
Trivia: In this episode, Colleen Rennison plays "Ally", the young girl who helps Teal'c. Rennison would later go on to play Cassandra (the Hankan girl SG-1 brings back to Earth in "Singularity") in "Rite of Passage."
Within the Serpent's Grasp (2) - S1-E22
Trivia: When Teal'c says the long range communication device is somewhat like a television, Jack jokes about if it gets "Showtime." The first 5 season of Stargate SG-1 aired on Showtime.
Trivia: Besides Don S. Davis and Christopher Judge starring with Richard Dean Anderson on MacGyver, in some episodes, the actor Steven Williams who played General Vidrine also starred with Richard Dean Anderson in S1-EP12 Countdown.
Suggested correction: I think this entry needs to be edited to simply state that many of the actors on "Stargate SG-1" also appeared on "MacGyver". Besides the three mentioned, there have been over a dozen other actors who were on both shows, including Robin Mosley and Garry Chalk.
Trivia: When Colonel O'Neil has been sent for a complete examination by General Hammond, Dr Fraiser tells Jack that his "blood pressure, DRE and EEG are all normal." Blood pressure forms part of any medical exam. An EEG (or electroencephalogram) is a recording of the electrical activity of the brain and considering Jack's seemingly abnormal behaviour might be considered reasonable. However a DRE (or Digital Rectal Exam) is a procedure where by a finger is inserted up the back passage to feel for the prostate. Other reasons for this procedure include looking for blood from a intestinal cancer or evidence of spinal cord injury. Given Jack's age its not necessarily an unreasonable thing to do but given the reason he's in the infirmary is because of his behaviour, it seems very strange. An alternative conspiracy theory could be that it's a bit of a punishment.
