Plot hole: After Kimberly has the vision of the pile-up, she pulls her car across the on-ramp. She is still behind the concrete separator, so how did the truck actually hit her car later on? There was no evidence that the concrete was ever there. The truck got her cleanly.

Continuity: In the scene where the lottery winner is going to die, watch the beer bottle he takes out of the fridge, it moves all over the place. It even vanishes a couple of times.

Factual error: In the final scene where the gas grill blows up, the arm that falls to the table in front of the mother is not from a teenager - it is nearly twice as large as the young man's arms (as previously seen in multiple scenes). Some people say it's a leg, but if that's so it's a bit odd having fingers on the right side of it...

Revealing: In the scene where Rory gets cut into thirds, in the background you can faintly hear someone cheer and say beautiful, perhaps because the stunt went so well.