Visible crew/equipment: In the finale, Jessica runs over to Jason from behind and she stabs him in the heart with the dagger. Then Jason lashes back and hits Jessica, and she goes flying backwards. Absolutely anyone can see the large blue crash mat that she lands on.
Great sites
Mistakes
As Agent Marcus runs through the woods, away from Jason, all she wears is a white towel around her body, which is just tucked in and over at the top. However it is very obvious that the towel is clipped together round the waist, in order for it not to fall of, most obvious because she trips, climbs over branches, etc. and the towel is always tightly secured. See more...
Trivia
Kane Hodder, who played Jason in parts 7-X also makes an appearance in this movie as one of the two FBI agents who gets killed by the possessed coroner. See more...
Jason Goes to Hell: The Final Friday mistakes
Revealing: When Jason (in Robert's body) is shot in the head at the end of the hall, a close up reveals the bullet hole to be obviously just makeup.
Other: In the scene at the beginning where Phil eats Jason's Heart, you'll notice that he screams like a monster for a bit. Don't you think that the two security guards would hear the screaming, being that they're in the very next room?
Jason Goes to Hell: The Final Friday trivia
When Steven is in Jason's house, we see the "Necronomicon", or "Book of the Dead" from the "Evil Dead" movies. He even picks up the book and flips through it.
Kane Hodder, who played Jason in parts 7-X also makes an appearance in this movie as one of the two FBI agents who gets killed by the possessed coroner.
This is the only Friday The 13th Film, First (1980) to X, or the 10th (2001), that Jason's face isn't seen.