In Lori's dream kids are teasing a young Jason and they place a burlap sack in his head, this is similar to the burlap sack Jason wore in Friday the 13th Part 2. Jason started wearing the goalie mask in Friday the 13th part 3.

When Freddy turns into the caterpillar and smokes from the bong like device he's mocking the Alice in wonderland caterpillar character.

When Will is being administered the hypnosill at the mental institution, he sees the TV report about the murder on Elm St. Notice that the call letters for the TV station are "KRGR". Does that look like a relevant abbreviation to you?

The principal at Laurie's High School is Robert Shaye, the producer for all of the Elm Street flicks, he even has a part as himself in New Nightmare, and a cameo in Freddy's Dead. The DVD has a deleted scene in which he has a couple of lines.

The director, Ronny Yu, was reluctant to get involved with this movie as he knew nothing of Freddy or Jason, but that is exactly what New Line wanted: somebody with a fresh look and fresh ideas for the legendary franchises.

Another potential ending suggested for this film involved Freddy and Jason awakening in Hell, Freddy had his arm back on and Jason's fingers had regenerated. They would proceed to face off for another fight only to be stopped by hooks and chains suddenly shooting out of everywhere and digging into their flesh. The movie would then end with Pinhead (from the "Hellraiser" series) coming out of the darkness and saying "Now what seems to be the problem?" This was eventually rejected as the director wasn't a fan of the Hellraiser franchise.

Originally fan favourite Kane Hodder was going to reprise the role of Jason but, to much disappointment, the director felt he was too short and didn't have the right type of eyes for the more sympathetic character Jason eventually becomes in this film. Ironically even long standing Friday the 13th fans eventually admitted they thought replacement Ken Krizinger played the role better than Hodder.

The magazine ad that Freddy's glove pops out of reads "Hard as Steel Dream Nails"

If you watch carefully when Freddy's head is coming through the wall you can see what looks like a little alien's head on his forehead. It's probably just a trick of the light but it is interesting.

The first weekend of "Freddy vs. Jason" made more money than the entire runs of "Jason X" and "New Nightmare," the last movies in their series, combined.