Visible crew/equipment: During the opening sequence Cole does a backflip to get down from a tree and lands behind some tall grass, as he pushes the grass aside and steps through you can see the stuntman who did the backflip trying to hide behind him.
Enter the Ninja (1981)
1 visible crew/equipment mistake
Directed by: Menahem Golan
Starring: Franco Nero, Christopher George, Susan George, Sho Kosugi
Deliberate mistake: After the black ninja and white ninja clash swords for the first time, the black ninja pretends to put his sword in its sheath, which is slung over his back, rather than actually doing it.