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(at around 31 mins) Filmmakers say that the man hanging on the jail bars when Kimberly walks into the insane asylum is put there to pay homage to Chief Bromden (Will Sampson) in One Flew Over the Cuckoo's Nest (1975).
Real logs were tested for the crash sequence, but they "didn't bounce enough", therefore, the logs are CGI in this film.
The accident on the highway was based on the 125 car pileup on Interstate 75 in Ringgold, Georgia, on March 14, 2002.
An instrumental version of John Denver's "Rocky Mountain High", the song that accompanied most of the deaths in Final Destination (2000), plays in the dentist's waiting room.
(at around 5 mins) The school bus full of kids chanting "pileup" is from Mt. Abraham, the same school as all the victims from Final Destination (2000).
The Stonybrook Institution sanatorium that Clear places herself in is the same sanatorium used in the opening of Halloween: Resurrection (2002).