Stargate SG-1 (1997)

Touchstone - S2-E14

Continuity mistake: The Stargate on the Weather Controlled Planet has the Earth symbol (Similar to Å) on it, while it should be exclusive to Earth. (00:02:18)

PlutoniumDG

Lockdown - S8-E3

Other mistake: When they are securing the base into three zones after already going into lockdown they secure zone one. Then zone three. Then zone two is secured. But because zone two is in between zones one and three it would already be secure. They are securing the zones from each other. Clearly showing O'Neill secure zone two with a closing bulkhead door displays the incompetence of one of the other two characters. (00:29:40 - 00:32:00)

Singularity - S1-E15

Revealing mistake: At the end of the opening credits, they approach a group of three dead bodies to tag them. The second body we see, wearing a light grey shirt, moves its head a little as they are passing the first body. (00:06:00)

jimba

Children of the Gods (1) - S1-E1

Continuity mistake: As the female soldier approaches the gate when its first activated, an alien device is thrown through. You can see in the shot that the device will land much further away from her foot than what is shown when the shot changes. (00:02:25)

ClearanceClarence

The First Commandment - S1-E6

Revealing mistake: The shot of Daniel right after Conner says "They only come out at night," you can see the the breath of Daniel. The only time you see that is when It's fairly cool outside. The planet is suppose to be on the warm side. (00:08:30)

Insiders - S10-E4

Revealing mistake: When Ba'al is making his escape right before the Symbiote gas is released there are two shots of Ba'al clones entering into a room. In both shots one of the Ba'al clones is not Cliff Simon. (00:37:20)