Repeated scenes: In the opening sequence, Stacy walks past Corrigan 4 times, and the red car with the john turns the same corner three times.
Hooker fires 7 shots from a 6 shot revolver in the gun battle with the gun thug at the porno studio. Atypically, he does run out of ammo after the 7th shot.
After Kelly was shot and is laying on the ground, her right hand is gripping Hooker's collar. When the camera angle changes, he is holding her right hand.