1.The iconic scene in Clueless where Cher is being mugged and hesitates lying on the ground because she is wearing an Alaïa dress is actually inspired by something that really happened.
2.Leonardo DiCaprio regrets that he had to turn down the role of Dirk Diggler in Boogie Nights in order to star in Titanic.
3.The song "A Whole New World" was actually a last-minute addition to Aladdin. It was added after the character of Aladdin's mom was removed from the film.
4.In Forrest Gump, Kurt Russell provided the voice of Elvis Presley.
5.Someone at Pixar accidentally deleted all the work that had been done on Toy Story 2 — while the film was in production — from the studio's internal computer server. It was only saved because the film's supervising technical director had been on maternity leave and working from home (which meant there was a copy of the film that existed outside Pixar's internal servers).
6.Harrison Ford turned down the role of Dr. Alan Grant in Jurassic Park.
7.In A Goofy Movie, it's often assumed that Powerline was modeled after Bobby Brown; but he is actually a combination of Prince, Michael Jackson, and Bobby Brown.
8.Romy and Michele’s High School Reunion is actually a bit of a spinoff of a 1988 comedic play titled Ladies’ Room — in which Romy and Michele appear as minor characters.
9.The classic scene where Robin Williams' character Daniel hides his face in the cake frosting in Mrs. Doubtfire took over 50 takes to get right.
10.Kevin Costner wrote a sequel to The Bodyguard that would have starred Princess Diana.
11.Jodie Foster had to really fight for the role of Clarice Starling in Silence of the Lambs. The film's director, Jonathan Demme, didn't think she could play a convincing FBI agent and instead wanted to cast Michelle Pfeiffer.
12.The rumor that Janet Jackson demanded that Tupac Shakur get an HIV test before he kissed her for their film Poetic Justice is completely false.
13.There wasn't supposed to be any snow in Home Alone, but after a blizzard hit on the second day of filming it forced the filmmakers to add snow to all the other scenes for continuity.
14.Danny Elfman actually wrote all the songs for The Nightmare Before Christmas before there was even a script.
15.Warren Beatty who directed and starred in 1990's Dick Tracy, used only seven colors when making the film.
16.Julia Roberts was the one who convinced Richard Gere to costar with her in Pretty Woman (which he had initially turned down). In fact, she flew to New York to meet with him one-on-one, and during their meeting she took a piece of paper and wrote on it. She then turned it around and it said, "Please say yes," to which, of course, he said yes.
17.Bruce Willis was a huge fan of Reservoir Dogs and wanted to work with Quentin Tarantino — and reportedly wanted the lead role of Vincent Vega in Pulp Fiction (which he had heard about from Harvey Keitel). Unfortunately, by the time he met Quentin, the role had already gone to John Travolta.
18.In an early version of The Lion King, Scar ends up raising Simba (after he kills Mufasa).
19.And finally, James Cameron did not want "My Heart Will Go On" to be in Titanic because he thought the movie was too epic and didn't need a pop song in it.