Clash of the Megazords - S1-E29
Other mistake: When TJ goes to get the Phantom Ranger's ruby, he is standing on top of the battery pack on the Turbo Megazord. There are no other places for him to stand. After he destroys and knocks off the battery pack, in the next shot he is still standing in the same place, but there is nothing for him to stand on.
Other mistake: When O'Neill first goes to visit Teal'c in his cell the symbol of Apophis on Teal'c's head is upside down.
The New Kid - S1-E2
Other mistake: At the start when the gang change the time on the clock in the classroom, it wouldn't control the main school clock, plus in every other episode the clock has been operated by The Box on the side of the school, as shown in " The spy who came into the playground".
Other mistake: As Kai's squadron are approaching The Fore Shadow, the ship begins to fire its massive web like plasma waves at the planet, and fires over and over continually. Except in close up shots as Kai's squadron are flying around it. Like it completely stops firing in closes ups, though when cutting away suddenly blasts are close enough to it that they would have been coming out during those close ups. (00:03:05)