Friday the 13th Part VIII: Jason Takes Manhattan (1989)

Revealing: When Jason kills the boat captain he comes up way short of making contact with the captain's throat. He's probably a good 2 inches away from it. It definetly doesn't help that this scene is in slow motion either...

Continuity: By the radio on Jim's boat is a bottle with a boat in it and the cork in the bottle is pointing to the left side. When Suzi gets up to check on the noise, the bottle is visible and the cork is now pointing to the right side.

Revealing: As Sean dives into the water to save Rennie, in all the overhead shots Rennie has dry, curly hair, but in closeups her hair is soaked down straight. In the overhead shots it's obviously a stunt double.

Jensen Daggett was genuinely terrified when actor Kane Hodder pulled her towards him, through the porthole. This is because a huge shard of glass was right by her throat and Kane was unknowingly pulling her toward it. You can see the frightened look on her face.

Interesting note. The cook that Jason threw into the mirror at the diner is Ken Kirzinger, who went on to play Jason Vorhees in the movie "Freddy Vs Jason."

The original poster for the film had Jason ripping through an "I Love New York" poster. They had to remove the poster from theaters and change it quickly, due to complaints from the New York Tourism Committee.