Mudd's Women - S1-E7
Continuity mistake: In the briefing room, after Mudd is forced to give his real name, the screen lights up with his record of offenses. In the picture, his image has the ear bauble on the right ear, but he wears it on the left.
Where No Man Has Gone Before - S1-E4
Continuity mistake: As Kirk, Spock and Mitchell exit the lift, Yeoman Smith is by the door and begins to follow, and an un-named guy walks by her and into the lift. In the wide shot of the bridge, the actions of Smith and the crewman are repeated.
Where No Man Has Gone Before - S1-E4
Continuity mistake: After Mitchell relieves him, Mr. Alden walks past Yeoman Smith. As he does, he suddenly disappears as Kirk is sitting in his chair. (00:03:55)
A Piece of the Action - S2-E17
Continuity mistake: After Kirk proposes a deal at the end, Oxmyx agrees and points towards the others behind him with his left hand. A second later, he's facing toward the camera with his right hand pointing.
Continuity mistake: When Kirk gives the order to Scott for transport, Spock lies in a diagonal position with the yellow spores on his chest with McCoy kneeling by him. After the cut to Scott on the bridge, Spock is lying with his head towards the camera, his chest is clean, and McCoy standing about six feet to Kirk's right. All much too quickly to be normal.
Continuity mistake: As Kirk and party dematerialize, Kirk's arms are by his side. As they are briefly seen in the Transporter room, his left hand is up with the communicator.
The Trouble With Tribbles - S2-E15
Continuity mistake: After Kirk opens the bin, the Tribbles fall on him. At first, he shields his head, then drops his right arm. Suddenly, it's over his head again.
The Trouble With Tribbles - S2-E15
Continuity mistake: During the brawl, as Cyrano Jones watches the action, the glass he quickly raises loses most of the liquid. After he gets half way through the scene, the glass is suddenly almost full.
The Trouble With Tribbles - S2-E15
Continuity mistake: Uhura's image on the conference viewer is of a close up on her face. When the camera looks at the screen, the image is of her head and upper torso. Likewise, when Fitzpatrick is on, first it's his head and torso, then it's only his head and shoulders.
Continuity mistake: After Kirk knocks the jailer out, there's a bit of stew on the cell's door above the lock. After Kirk drags the man into the cell and closes the door, the bar above the lock is clean and dry.
Continuity mistake: In the first scene when Spock is piloting the shuttle craft out of the Enterprise and into space, as the bay doors open you can see both the ship's shuttles, the Galileo, and right behind it the Columbus. Yet as soon as the Galileo clears the bay doors, in the immediate reverse shot, the bay is empty and the Columbus has disappeared. (00:01:45)
The Ultimate Computer - S2-E24
Continuity mistake: When Sulu is first reporting the M-5 movements, Kirk's hand alternates between being up at his temple and down by his mouth, too quickly to be real.
Continuity mistake: When Kirk and Spock get to Sick Bay, the doors open to reveal Nomad coming out. But the shot of Nomad coming out is a re-used shot of it coming out of the Turbo Lift, not the Sick Bay, as the nameplate said. (00:42:10)
Space Seed - S1-E23
Continuity mistake: At the compression chamber, the pressure meter goes from thirty to ten too quickly to be accurate between shots. After showing ten, the meter jumps back to twenty.
Continuity mistake: After DeSalle tries, and fails, to call the ship, he shakes his communicator, and the grille closes, but is opened again in the wide shot.
Continuity mistake: As the Galileo re-enters the atmosphere, you can see Scotty in the copilot chair. His hair is parted on the left side, but in the interior shot, it's parted on the right.
Continuity mistake: After the wild man is down on the mound, his right hand is under his body. In the close up, it's on the frame of the trike. (00:05:05)
What Are Little Girls Made Of? - S1-E8
Continuity mistake: As Kirk talks to Ruk, a closeup of Kirk shows a few strands of hair down over his left eye. In the regular shot, it's normal.
Answer: Kirk was getting his physical and Dr. McCoy probably turned off communications, because if he hadn't, Kirk would have left and headed straight for the bridge, leaving McCoy irritated.