Directed by: Robert Wise
Starring: William Shatner, George Takei, Leonard Nimoy, Walter Koenig, DeForest Kelley, James Doohan, Nichelle Nichols
Other mistake: 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.
Other mistake: When Kirk and Scotty are in the travel pod going to the Enterprise, one shot of the outside of the pod has them looking like two dimensional cut outs. Also, from interior to exterior shots of the pod Kirk goes from facing directly ahead, to a quarter profile and back.
Continuity mistake: 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. (Corrected in the Director's Edition).
Suggested correction: Though the planet had no moons, it did form a binary pair with T'Khut and was considered its sister planet. From Memory Alpha.
Spock: Each of us... At some time in our lives, turns to someone - a father, a brother, a God... And asks..."Why am I here? What was I meant to be?"