Trivia: At one point early in production, the film was going to be slightly retooled in order to make it the third entry in the "Cloverfield" franchise, following "Cloverfield" and "10 Cloverfield Lane." Eventually, this idea was dropped, and the movie was left as a stand-alone film.
Trivia: At one point before the film was widely released, the studio was interested in remaking the film with a larger budget and more well-known actors, and including the original version of the film as a DVD "special feature." Thankfully, this idea was eventually shot down, and the original version of the film was released in theaters.
Trivia: Reportedly, star Kevin Bacon was at a rough patch in his life during production and didn't understand the appeal of the film or the light-hearted comedic elements. (Even once breaking down in public and exclaiming in frustration "I'm in a movie about giant underground worms!") And thus, he chose to have no involvement in the sequels. It wasn't until some years later that he decided to re-visit the film and give it another chance after it became a massive cult-hit, and discovered that he actually really loved it. Bacon has since gone on record saying one of his dream projects would be to reprise his role of Val McKee in a future film.
Trivia: The producers have stated that "Jigsaw" was created as they wanted to bring the "Saw" series back, and they wanted to gauge audience interest in more films. When the film became a hit - earning about $100 million worldwide against a relatively tiny $10 million budget - a ninth film was announced, with a tenth also possible.
Trivia: Director Gerald Thomas provided the monster gibberish for Oddbod Jr.
Trivia: For the scene in which Jonathan drives a stake into Lucy's heart, Steven Weber's reactions to getting doused in blood are real. For this particular sequence, Mel Brooks did not tell him what was going to happen.
Trivia: Jimmy didn't die even though it never shows him after he faints on the steering wheel in the car with Lori. He simply passed out. The television cut shows him alive in the ambulance at the end, but for some reason in the theatrical version, they left it out for us to 'wonder'.
Trivia: In the scene where the judge is killed by the two sentries, one of the sentries is played by director Sam Raimi (of Spider-man fame).
Trivia: Like Tanedra Howard won a role in Saw 6, Gabby West won the second season of Scream Queens and is featured in this film. She is Kara, Evan's girlfriend. She is underneath one of the rear wheels of the car in the garage trap.
Trivia: At the very end of the movie when the new kids are telling the story, they make a sarcastic comment about the killer being the girl from the Noxzema commercials. The girl who played the killer, Rebecca Gayheart, really was the girl from the Noxzema commercials.
Trivia: When Billy's mom takes the picture of Gizmo at the beginning, Gizmo becomes frightened and runs over to Mr. Peltzer. When the scene is slowed, you can see the puppeteer's hand underneath while operating the Gizmo doll. Not a mistake as needs slo-mo, but worth a look. (00:19:10)
Trivia: When Van Helsing is fighting Dracula towards the end as a werewolf, he stops to get out his claws. This is an obvious reference to Wolverine, whom Hugh Jackman played in both "X-Men" movies.
Trivia: Mr. Tuttle is also the name of the housekeeper from another haunted-house movie, "The Changeling" (1960).
Trivia: In the hospital Heather is told that she can not be in a certain area without a pass; she replies "Screw your pass." The very same line was spoken, by her character Nancy in Nightmare on Elm Street 1, to a hall monitor in her dream.
Trivia: Kirsten Dunst (Claudia) had her first on screen kiss, with a much older Brad Pitt, in this film.
Trivia: When Buffy is cheering at the basketball game and Grueller (now a vampire) shows up we see him growling at a player from the other team. The player then tells him "Here, take it" and hands him the ball. The player from the other team (in the red) is Ben Affleck, pre-stardom.
Trivia: All the characters in the movie are named after famous prisons around the world - Holloway, Wren, Leavenworth, San Quentin, etc. The characters match the prison types too - Alderson never meets the group, and isolation is the major form of punishment at Alderson Prison in West Virginia. Dr. Holloway is a female doctor, and Holloway Prison is a women's prison in England, Kazan is autistic, and Kazan Prison is Russia is a "disorganized" prison, etc.