Robert Pattinson Masturbated To Completion On Set, And 17 More Wild Things Celebrities Did For Their Movie Roles

Leonardo DiCaprio slept inside an animal carcass, but at least he got an Oscar out of it.

4.Will Smithadmitted he"went too far"while working onEmancipationand got stuck in literal chains.

Daniel Day-Lewis on the red carpet and Daniel in a wheelchair in the movie My Left Foot

while preparing to play Steve Jobs inJobs.

Hilary Swank on the red carpet and Hilary playing Brandon Teena in Boys Don't Cry

Lady Gaga on the red carpet and Lady Gaga playing Patrizia in House of Gucci

Will Smith on the left smiling in a suit, and in a movie still from "Emancipation 2022" on the right

Jamie Foxx on the red carpet and Jamie with sunglasses on playing the piano in the movie Ray

Leonardo DiCaprio on the red carpet and Leo playing Hugh Glass in The Revenant

Left, Robert Pattinson in a gray suit; right, Pattinson as Dalí with a high-collar shirt

Ashton on the red carpet and Ashton posing in front of a computer dressed as Steve Jobs

Charlize Theron on the red carpet and Charlize as Aileen Wuornos holding a bottle of beer

Forest Whitaker on the red carpet and Forest yelling into a microphone as Idi Amin

Margot Robbie on the red carpet and Margot crying about her skates dressed as Tonya Harding

Joaquin Phoenix on the red carpet and Joaquin singing as Johnny Cash in Walk the Line

Jennifer Lopez on the red carpet and JLo singing into a mic as Selena

Adrien Brody on the red carpet and Adrian playing the piano in The Pianist

Gary Oldman on the red carpet and Gary with a cigar in his mouth as Winston Churchill

Colin Firth on the red carpet and him as King George VI in The King's Speech

Val Kilmer on the red carpet and Val singing as Jim Morrison

Christian Bale on the red carpet and Christian as Dick Cheney