21It's a Wonderful Life
The pool under the gym floor from "It's a Wonderful Life" is a real pool, and it is still in operation today at Beverly Hills High.
During the filming of the movie "The Viking" (1931) 25 crew members and a stowaway were killed when the ship SS Viking exploded among icebergs. It is still the largest loss of life in film-making history.
23Gone with the Wind
The "Burning of Atlanta" scene in "Gone with the Wind" was shot with full-size burning facades and all of the only seven Technicolor cameras in existence at the time.
The scene in Jaws where Matt Hooper is attacked in the cage was actually performed by a 4'9" horse jockey in a smaller cage to make the sharks look bigger.
The streaking scene in 'Old School' was filmed at night and every store was closed except a 24 hour gym. On the first take, several people in the gym shrieked in horror as a naked Will Ferrell passed by them. In the ensuing takes no one was near the gym's windows.
26Magical Mystery Tour
The movie 'Magical Mystery Tour' was largely unscripted. The Beatles simply told the crew and cast to "be on the coach on Monday morning". The movie didn't even have a stunt driver. In the race scene, the bus was driven by Ringo.
The movie 'Whiplash' (2014), was shot in 19 days, with a schedule of 14 hours of filming per day. Also, Chazelle (Director) was involved in a serious car accident in the third week of shooting and was hospitalized with a possible concussion, but he returned to set the next day to finish the film on time.
28Invasion of the Body Snatchers
During the filming of the 1978 film "Invasion of the Body Snatchers", actress Veronica Cartwright was not told the film would end with Donald Sutherland delivering his infamous pod shriek rather than meeting him for an actual conversation. She was genuinely terrified when Sutherland shrieked at her.
While filming Reservoir Dogs, Tim Roth had lain in the pool of fake blood for so long that the blood dried out and he had to be peeled off the floor, which took several minutes.
The dancers in the movie 'Fame' (1980) didn't dance to the title track 'Fame' in the street scene. They danced to a different song, to Donna Summer's 'Hot Stuff' as at the time of the three-day shoot, the song hadn't been written.