The fruit loops on O'Neill's spoon were glued in place to ensure continuity between takes/time loops, which is why he never eats that spoonful of cereal.
At a Stargate SG-1 (1997) convention, Christopher Judge, an accomplished golfer, stated that while he hit a golf ball through the Stargate several times with ease, Richard Dean Anderson couldn't do it, even after multiple attempts. As a result, CGI was used to complete the scene.
The book "Latin for the Novice" that Jack reads when helping to translate the text on the altar is written by Joseph Mallozzi, Ph.D. Joseph Mallozzi is a writer and producer for Stargate SG-1 (1997).
A total of 22 different iterations of the time loop are depicted.
Peter DeLuise: an unnamed airman who assists Dr. Jackson after he (Jackson) is knocked over by Siler... again and again and again and again...