Deliberate mistake: During the opening shot and titles, Neville is shown driving by the same block three times, each from a different angle. The first shot is high, the second shot (00:01:50) is from the hood of the car looking at Neville, and the third (00:02:40) is ground level.
The Omega Man (1971)
1 deliberate mistake - chronological order
Directed by: Boris Sagal
Starring: Charlton Heston, Anthony Zerbe, Paul Koslo, Rosalind Cash
Revealing mistake: In the scene at the stadium where Lisa is helping Neville escape from Mathias' people, it is extremely obvious that in the far shots, it is a stunt man (wearing a very bad grey wig) driving the motorcycle, and Charlton Heston in the close up shots.