Continuity mistake: When the Thermians enter the bridge to witness the ship being taken out of the spaceport, Guy is standing in front of and above Teb, but when the shot changes, Guy is now standing behind Laredo and on Teb's right.
Continuity mistake: At the dinner table, when Mathesar is speaking about their former commander, the fork Jason holds in his left hand instantly switches position several times.
Continuity mistake: When Fred is giving Guy the "comic relief" pep talk, his left hand is on the left side of Guy's chest, but then the view changes to Guy's right side and Fred's left hand is now on the right side of Guy's chest, where it remains until Fred turns Guy and they walk out of the scene.
Continuity mistake: When the Thermians meet the crewmen in their true form, Fleegman instantly changes position from standing erect to slouching.
Continuity mistake: As Mathesar speaks to Jason by the sliding glass door, he changes position and distance from Jason and the door.
Continuity mistake: When the 4 "nerds" first approach the captain to talk about their supposed problem the girl is standing in a different place than when they cut back. In a later scene the girl is in this position and I believe they reshot the earlier scene while they were doing the later scene. (00:07:30)
Revealing mistake: When General Roth is threatening Jason with his claws wrapped around Jason's throat, the very moment he tilts his chin back, you can see the actor's open mouth and teeth visible inside, though he's supposed to be an alien enemy.
Continuity mistake: During the opening sequence of Alexander storming out of the back rooms, you can see Tommy help keep him there. However within the next shot as they Call Gwen to the stage, you can see Tommy and the whole crew out on stage but Alexander and the Commander are still having the same dialogue. (00:04:10 - 00:05:00)
Continuity mistake: When they're flying down to the planet, Guy is upset because he doesn't have a last name. He asks Jason, "What's my last name?" and Jason doesn't know. In the very next scene, Jason addresses Guy by his last name, Fleegman. (00:55:00)
Suggested correction: Guy is saying that his character doesn't have a last name, because his character dies off quickly and has no need for one, so he thinks he's in actual danger.