Black Christmas (1974) - The audio for the demented phones calls was edited into the film during post-production. While shooting the footage for the phone call scenes the actresses were actually just reacting to threatening dialog being spoken from director Bob Clark from off-camera.
Silent Night, Deadly Night (1984) - Opened on the same weekend as A Nightmare on Elm Street (1984), and briefly out-grossed the latter by around $161,800 before profits fell about 45% by the second weekend.
Gremlins (1984) – Zach Galligan revealed in an interview that when the movie was made there was no CGI so all the gremlins were animatronics, each costing USD£30-40,000. So when everyone left the lot for the day security would have everyone pop the trunks on their cars to make sure they weren’t stolen.
Silent Night, Deadly Night II (1987) – When Eric Freeman played the role of Ricky, he had a strong eyebrow movement in his performance. His eyebrows moves up and down in total of 130 times.
Jack Frost (1997) – Shannon Elizabeth’s first acting role.
Jack Frost 2: Revenge of the Mutant Killer Snowman (2000) – It rained the entire four weeks of shooting the movie, resulting in a tropical island with an amazing lack of sun.
Santa’s Slay (2005) – The old book that explains the origin of Santa Claus is written in Icelandic. Some believe that parts of the Santa mythos are taken from Norse legends.
Black Christmas (2006) – Andrea Martin, who played Phyllis in Black Christmas (1974), said in an interview that she hadn’t thought about Black Christmas for 32 years and it “came out of the blue” when Glen Morgan offered her the role as the house mother in the movie.
Silent Night (2012) – The film is partially inspired by the real-life Covina Holiday Massacre which took place on Christmas Eve in 2008.
Caesar and Otto’s Deadly X-mas (2012) – Judith O’Dea was offered the role of Roberta, but turned it down.