Continuity: In the final scene on the bridge, Spock and McCoy are wearing colored arm bands which identify their departments: Spock's is orange (for Science) and McCoy's is green (for Medical). In the very last shot, Spock is wearing the green band and McCoy is wearing the orange one.

Continuity: When Kirk leaves the Enterprise, you can see the set behind him, because this scene, among some others was added prior to airing the show on ABC. Kirk's suit also changes from the time that he is seem leaving the ship to the time that Spock is sent back unconscious.

Visible crew/equipment: In the scene where the 4 officers and Ilia exit the ship onto the hull and begin walking towards the V-ger structure, the outline of the hole left in the matte painting of the Enterprise saucer section is clearly visible.

Continuity: When V'Ger first appears on the bridge as a column of light, you can see that the two sides of the image don't match up, because they tried to splice the special effects person who was moving the column out of the shot.

Continuity: This is only in the original version of the movie. In the original series Spock mentioned that Vulcan has no moons. In the movie, when Spock is on Vulcan, he looks up and shields his eyes against the glare of the sun. When the scene changes, it is night and there are moons. This has been corrected in the new version.

Continuity: This is only in the "extended version" of the video, as far as I know. When the Enterprise is inside VGer, Spock leaves the ship and flies around in a spacesuit. He exits and re-enters the ship in a white spacesuit with a round helmet, but is shown flying around in an orange suit with a conical helmet.

Revealing: As the pod carrying Kirk and Scotty aligns itself to dock with the Enterprise, a ghost-image of the support stand for the miniature can be seen following the model beneath it.

Revealing: In the original, pre-director's edition, the shot of the Enterprise finally clearing free of the dry-dock shows a supporting pylon protruding from the starboard side of the engineering section of the starship miniature.

Revealing: When Spock's shuttle is lining up to dock with the Enterprise, look below the shuttle and you can see the hydraulic mechanism used to maneuver it.

Continuity: In the new Director's Cut on DVD, during the scene in which Kirk and McCoy are asking Spock why he has returned to the Enterprise, they added an effects shot of the Enterprise's warp nacelle outside the window. Keep an eye on it throughout the scene. Even considering the fact that the camera angle changes throughout the scene, the nacelle appears to "move around" (side-to-side, up-and-down, nearer/closer to the window) and the perspective/foreshortening of it never changes in relation to the camera angle.

Other: When the robotic Ilya punches her way out of sick bay, the edges of the hole should be pointed outward, and there should be debris on the floor. There is no debris, and the edges are pointing inward.

Continuity: After Spock's arrival, the Enterprise is finally able to exceed Warp 1. At the end of the test run, the shot shows the Enterprise, the beautiful light spectrum tube, and the pop/explosion created by warp speed. The problem is the pop/explosion and the spectrum tube do not line up. It's almost as if the two started at different points.