Continuity mistake: When Al is standing next to the juke box, Sam walks over to make a selection, and when Al starts talking his reflection is visible on the glass. Later in this episode, Sam is talking to Al at the sink of the dressing room at the ball park. As Sam looks into the mirror he says he thinks Al is a vampire, to which Al replies, "Neurological holograms don't reflect, Sam."
Continuity mistake: Though he's leaped into someone else, we always see Sam as Sam, dressed in all the host's clothes (including glasses or sunglasses). His host is revealed only in reflections. But here, when he looks at his host-self in the mirror, the hat and clothes are all identical - except that the reflection is wearing glasses, and Sam isn't.
Continuity mistake: After Miss Melanie's son leaves, Sam/Jessie reaches out to steady her. His left hand is on her shoulder until the camera angle changes, when both his hands are at his sides. Change angles again, and his hand is back on her shoulder.
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Factual error: The episode takes place November 9, 1965. After the haircut incident they are seen moving away from a theater with Doctor Zhivago on the marquee, but the movie was released December 22, 1965, a month and a half after the scene is supposed to take place.
Continuity mistake: When Sam ejects from the X-2 and parachutes to safety, he lands on the desert floor and the chute comes down on top of him, covering him completely. In the very next shot, we see him lying face up and the parachute has entirely disappeared.
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Revealing mistake: After Sam nearly falls down the elevator shaft, the scene fades and comes back in with Sam speaking to the landlord about the incident. The landlord brushes off Sam's hat with his hand and hands it to him. The brushing motion was played in reverse first to extend the length of the action.
Other mistake: In the locker room, the old man's hair is pulled down over his right eye, away from the mirror as his right side is toward the wall. In the reflection, his hair is facing toward the mirror over his left eye, rather than away over his right.