Continuity mistake: As Rhonda hands Shawn the glass of water in bed, he holds a cigarette pointing down. The close-up shot shows him receiving the glass of water and passing the cigarette to her with it pointing up. There was not enough time from shot to shot to re-orient the cigarette.
Continuity mistake: When Tate ties the bath robe sash around his neck to auto erotic asphyxiate, it comes from the door knob down the right side of his neck, then around his neck. The next shot, it is coming down the left side of his neck, then around his neck. The following shot, it is back down the right side of his neck again.