Most movie continuity mistakes of 1968

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Rosemary's Baby picture
Where Eagles Dare picture
Planet of the Apes picture
2001: A Space Odyssey picture
Bullitt picture
Night of the Living Dead picture
Once Upon a Time in the West picture
Chitty Chitty Bang Bang picture
Oliver picture
Yours, Mine and Ours picture
The Love Bug picture
Romeo and Juliet picture
Carry On Up the Khyber picture
Hang 'Em High picture
Columbo: Prescription Murder picture
The Lion in Winter picture
The Great Silence picture
The Wrecking Crew picture
The Party picture
Barbarella picture