18 facts that you (probably) didn't know about your favourite Christmas classics
Will Ferrell had to eat all of the sugar-tastic foods on the Elf food pyramid - syrup, candy canes, candy corn and candy and as a result, suffered from headaches throughout filming.
The exterior shot of the apartment that Buddy's dad lives in is the same apartment building that Dana Barrett lived in in Ghostbusters.
The cotton wool balls that Buddy eats in the doctor's office were candy floss that hadn't been dyed with the traditional pink colour.
In 2013, Will Ferrell turned down $29 million to be in Elf 2, stating: "I just think it would look slightly pathetic if I tried to squeeze back in the elf tights."
How the Grinch Stole Christmas (2000)
It took about eight hours to apply Jim Carrey's prosthetics and make-up, Carrey felt so confined in The Grinch's latex skin that he sought counselling from a Navy SEAL and was taught torture-resistance techniques to get through the ordeal.
Die Hard (1988)
Director John McTiernan insisted using extra-loud blanks to add 'hyper-realism' to shooting; the scene in which Bruce Willis shoots a terrorist through the bottom of a table left Willis with permanent hearing loss as the gun was too close to his ear.
The extra-loud blanks also had Alan Rickman flinching each time he fires a gun, forcing McTiernan to have to cut away immediately after Hans Gruber shoots anyone. You get a brief glimpse of Rickman winching when he shoots Takagi.
The scene were Han Gruber and John McClane meet, the filmmakers were trying to find a way to have the characters meet before the film's climax. They discovered Alan Rickman was able to put on an authentic American accent, and were able to write the pair's scene using Rickman's accent talents.
Miracle on 34th Street (1994)
When it was released in cinemas, 20th Century Fox offered a full refund to any viewers who didn't enjoy their Miracle on 34th Street remake - approximately 1,500 tickets were returned seeking refunds.
Home Alone (1990)
In the original script, Kevin's Uncle Frank was supposed to be the real mastermind behind Harry and Marv robbing the McAllister house.
Famous foul-mouthed Joe Pesci kept forgetting that it was a 'family' movie, resulting in many sweary, ruined takes. Director Chris Columbus advised Pesci to substitute "fridge" for the 'f-word' during his on-screen outbursts.
Joe Pesci avoided Macaulay Culkin when the cameras weren't rolling to make Culkin this he was mean. During a rehearsal for when Harry attempts to bite off Kevin's finger, Pesci actually bit Macaulay Culkin, leaving a scar which he has to this day.
Joe Pesci and Daniel Stern, who played Harry and Marv didn't think the film would be very successful, so they intentionally gave over-the-top performances, resulting in the overacted scenes that went down a storm.
The Santa Clause (1994)
Disney had to make an exception from their policy of not hiring any ex-cons for Tim Allen, because he has a criminal record after serving two years in prison for drug trafficking back in the '70s.
Love Actually (2003)
Prankster Hugh Grant knew Billy Bob Thornton has a (the made-up sounding) furniturephobia - a fear of antique furniture, so he would bring out a piece of furniture just before the pair were due to do a scene together, just to watch Thornton freak out in terror as the cameras started rolling.
When casting for Sarah, despite casting many British girls, director Richard Curtis kept saying: "I want someone like Laura Linney" before an exasperated casting director snapped: "For F*ck's sake, get Laura Linney then!"
Linney then auditioned and got the part.
Kris Marshall spent twenty-one takes, and most of a day, being undressed by three American women and enjoyed himself so much that he returned his pay cheque for the day, saying that he was happy to do it for free.
Richard Curtis had a forty-five minute meeting with members of the production in order to decide what colour Aurelia's underwear would be when she dove into the lake, they chose pale blue.