Children of the Gods (1) - S1-E1
Trivia: When Daniel tells the others that he believes there is an entire network of Stargates instead of just two, he and Carter figure out that they have to adjust for stellar drift in calculating the new gate positions. She mentions that they should be able to 'MacGyver' something together. This is of course a nod to Richard Dean Anderson, who played MacGyver.
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.
Chosen answer: Report 30185 is a joke report referring to the time when SG-1 go back in time to 1969 in the episode '1969'. The joke is that Colonel O'Neil knocked up a hippie and made sure Mitchel was taken care of throughout his life, like how he got into the 302 program while his buddy, a better pilot, did not.