Continuity mistake: When Roy and Jillian meet, the redness on Roy's face keeps darkening or lightening randomly between shots.
Continuity mistake: While the first UFO is blinding Roy, he protects his face. The distance between his hand and his face, and the expression on his face, keep swapping back and forth depending on the angle.
Continuity mistake: When Roy leans towards the steering wheel to watch the UFO, the position of his hands over the wheel changes between shots.
Chosen answer: I own the original (not special edition) DVD and I can always freeze the film and point out to people where the alien is and they see it too, but I can never see it when it's on TV or on my friends VHS copy, maybe it's just a 'gift' for the DVD owners?