Supernatural Insanity!

Article from Syfyportal.com

"Fans of The CW’s "Supernatural" have already expressed concern over the show’s new look and the addition of two young female leads. Now, they have the rug pulled out from under them regarding Jason Voorhees’ appearance in the 10th episode of Season 3.
Plans were in place for Sam (Jared Padalecki) and Dean (Jensen Ackles) Winchester to go head to head with the unkillable killer with superhuman strength.

"We have Jason from 'Friday the 13th,' the character with the hockey mask," creator Eric Kripke said. "He shows up in Episode 10. We have cleared the rights to actually use Jason. We have a twist on it so it is not really Jason out there but we have found an interesting way to bring him in so Sam and Dean fight Jason from 'Friday the 13th.' In our world, that is a pretty cool guest star."

However, word on the Internet — and the writers picket line — is that there is in fact a copyright issue preventing Jason’s “Supernatural” premiere So now, no one really knows what will fill in the Voorhees gap in Episode 10, and "Friday the 13th” fans will have to wait until the new movie hits theaters on Feb. 13, 2009 to get their fix."