Movies, The More You Know

Braveheart

Most of the horses used in the battle scenes were fake, weighed 200 pounds, and were fuelled by nitrogen cylinders that propelled them at 30 miles per hour. After shooting the scenes, Gibson was investigated by an animal welfare organisation who were convinced that the fake horses used were real.

Jonah Hill had to go to the hospital for bronchitis while filming Wolf of Wall Street. For seven months, he was snorting vitamin D (almost) daily, pretending it was cocaine.
The Candyman, played by Tony Todd, had to put real bees into his mouth to film the movie’s climax.
In classic Hitchcock movie North by Northwest, Cary Grant was actually older than his on-screen mother, Jessie Royce Landis.
Michael J. Fox's middle name doesn't start with a "J." His middle name is actually Andrew.