And Then There Were None - S3-E13
Continuity mistake: Whenever one of the castaways falls in the trap and "disappears", there is complete silence when their name is called out, yet when the Skipper falls in (the last of the six), suddenly Gilligan hears all their voices shouting from down below.
Gilligan's Personal Magnetism - S3-E21
Continuity mistake: When Gilligan knocks the door off the hut it lands on the Skipper's neck with the life preserver on the top. In the next shot the preserver is on the bottom.
Pass the Vegetables, Please - S3-E3
Continuity mistake: The radiation meter the Professor reads disappears between shots.
The Producer - S3-E4
Continuity mistake: Harold Hecuba (a.k.a. H.H.) goes out to change costumes. When he comes in as Ophelia the stage door first closes behind him, then falls off the hinges. The shot cuts to the Castaways, then back to H.H., and the door is back on the hinges.
Pass the Vegetables, Please - S3-E3
Continuity mistake: The book the Professor is reading to the others immediately switches from being lower to higher as the scene cuts.
Continuity mistake: After the vampire's wife (Ginger) unfolds the couch bed, she laughs with her arms down and spread out by her sides, but the next shot shows her hands up by her face, clutching her gown.
Topsy-Turvy - S3-E10
Continuity mistake: As the Professor cautions Gilligan about hallucinations, the long table is visible through the door. When the camera is close to the Professor and Skipper, the table is gone.
Topsy-Turvy - S3-E10
Continuity mistake: When Gilligan looks at the papaya tree, the fruit is yellow. When he gets to the tree, the fruit is green.
Continuity mistake: When Balinkoff shows Gilligan the control computer, it is off, but Gilligan is under control. A moment later, it is on.
Continuity mistake: Between the time the Professor is put into the trance and waking up, his mouth mouth goes from agape, and head turned to the left, to mouth closed, facing forward.
Pass the Vegetables, Please - S3-E3
Continuity mistake: The compound of huts seems to be very close to the beach, as the Professor, Skipper and Gilligan look out and can see it. Other times, it's a fair distance away through the jungle and obscured.
Pass the Vegetables, Please - S3-E3
Continuity mistake: As the camera is close up on the radio, Mary Ann's hand is down on the table. In the wide shot, it's suddenly up holding a fork.
Continuity mistake: The professor is put under a trance, referred to as "zombiefied." When it first happens, the professor is looking to his left. Later on, he's looking straight ahead.
Continuity mistake: When the imposter Gilligan is playing chess with Mr. Howell, the long shots show the imposter holding the spoon transmitter near the center of the table the chess board is on, whereas the close-ups show the transmitter close to the edge of the table.
Pass the Vegetables, Please - S3-E3
Continuity mistake: When the camera is in wide shot of the table scene where everybody fainted at the Professor's announcement, he has the book at belt level. In the close up, he has it at chest height.
Continuity mistake: In the hut, "Gilligan" has the spoon of his transmitter knife open so his commander can hear the conversation. In the wide angle shots, the spoon is half way out. In the close ups, it's fully in position.
Gilligan Goes Gung-Ho - S3-E15
Continuity mistake: In the final scene when the Skipper has Gilligan in jail, he is holding the law book in front of him. The shot changes and he is now holding it by his side.
Pass the Vegetables, Please - S3-E3
Continuity mistake: While Mrs. Howell cleans the hut at maximum speed, the book Mr. Howell reads changes position as the scene cuts.
The Hunter - S3-E18
Continuity mistake: Gilligan advises Kincaid that there's no game on the island. This contradicts an earlier episode in the same season where the castaways spotted a wild boar roaming the island (episode "Where There's a Will").
Answer: Bob Denver answered this when he was on a talk show hosted by Pat Sajak. He said they were going to write into an episode where the castaways found all these clothes, but it got too complicated, so he said, they decided, "who cares, it's only a TV show," and forgot about it. So the writers and actors even asked this, they just never bothered to address it.