Visible crew/equipment: When Harry and Perry are walking up the path at night, you can see some shadows on the trees that are going in the opposite direction.
Kiss Kiss Bang Bang (2005)
1 visible crew/equipment mistake - chronological order
Directed by: Shane Black
Starring: Robert Downey Jr., Val Kilmer, Corbin Bernsen, Michelle Monaghan
Factual error: On Day 3, look at The Embrey Star newspaper when it zooms into the headline. Above the headline is the newspaper's web address, hardly appropriate given the paper is from 1980.
More quotes from Kiss Kiss Bang Bang
Trivia: The title was suggested by Val Kilmer - it was originally called simply "Bang!"