Daniel is shot by a staff weapon which leaves a bloody hole in his outfit and destroys his walkie-talkie. He is able to drag himself to the sarcophagus, and when he emerges from it his clothes and walkie-talkie are intact, with no trace of blood on them, almost as if he had never been shot in the first place.
In the opening sequence, the shape of the front window/porthole of the Goa'uld ship changes between shots.
When Lt. Colonel Samuels presents his "Goa'uld-Buster"-Rockets, he explains that the warheads are mantled with the stealth-material used on stealth-bombers, so the Goa'uld should not be able to detect them, "even if they have something like our radar". This is an incorrect statement from Samuels: stealth-technology would not disguise the heat-trail produced by the rocket-engines. Stealth-bombers use a special construction to permit only a minimum of heat-radiation to leave the engine-section, which is impossible to use on the engine of a rocket. So even "our" radar would have easily picked up the approaching rockets.
Samuels reports that the Goa'uld motherships have settled into geosynchronous orbit. This would be 22,236 miles high. This is about 3 times the diameter of the Earth. All the views from the motherships and monitor simulations in the SGC show them in low Earth orbit.
First they say the 'Goa'uld buster' missiles impacted the shields just prior to detonation, and the footage shows only minor, non-nuclear detonations. Later, General Hammond talks about effects of their EMP (electromagnetic pulse) when speaking to the President on the phone. Only nuclear explosions could have caused an appreciable EMP.
At the end of the episode, one of NASA's space shuttles comes to the rescue. It takes months to prepare to launch a shuttle mission.
When Col. O'Neill pulls the pin on the second grenade, to destroy the shield generator, his finger is not on the spoon. The spoon is on a tension spring and would fly off immediately starting the countdown.
After Klorel is told by Apophis to destroy a city, we see him teleporting back to his ship, but the molecular deconstruction flashes appear over Apophis' face, even though the teleporter is behind him.
When Jackson uses the sarcophagus to repair his wound, it somehow also repairs his clothes.
(at around 19 mins) It looks as if script pages are laying on the sarcophagus on Klorel's ship, in the background behind Teal'c and Bra'tac.