1. For his role in Call Me By Your Name, Timothée Chalamet learned how to speak Italian, and spent four hours a day trying to master the piano and the guitar.
2. For her role in the upcoming movie Avatar 2, Kate Winslet learned to free-dive and hold her breath for over seven minutes.
3. Tom Cruise learned to fly a helicopter himself for the 2018 film Mission Impossible: Fallout.
4. Danai Gurira undertook some extremely intense sword training for her role in The Walking Dead.
5. Unbelievably, Bryan Cranston learned how to cook crystal meth for his role as a drug kingpin in Breaking Bad.
6. To play The Bride in the Kill Bill films, Uma Thurman had to learn three styles of kung fu, two styles of sword fighting, knife throwing, knife fighting, hand-to-hand combat, and Japanese.
7. As the dashing Noah Flynn in The Kissing Booth, Jacob Elordi had to ride a motorbike, which he learned on set in South Africa.
8. For his final film, Ma Rainey's Black Bottom, Chadwick Boseman learned to play the trumpet from scratch.
9. When he learned that he would be playing Noah in The Notebook, Ryan Gosling started figuring out how to build furniture just like the character.
10. For her turn as a prima ballerina in Black Swan, Natalie Portman spent eight hours a day training as a ballet dancer.
11. Margot Robbie practised ice skating for three months to learn the necessary skills to portray Olympic skater Tonya Harding.
12. After casting deaf actor Millicent Simmonds in A Quiet Place, the entire main cast learned American Sign Language for every line in the script.
13. Similarly, Riz Ahmed learned American Sign Language in order to play a heavy metal musician who loses his hearing in Sound of Metal.
14. To play the title character in The Pianist, Adrien Brody learned to play classical piano.
15. For his role in The Walk, Joseph Gordon-Levitt learned to tightrope walk by training with the very man he was portraying – Philippe Petit!
16. Bradley Cooper based his character in A Star Is Born on fellow actor Sam Elliott, and spent six months with a dialect coach trying to imitate Sam's voice.
17. As Captain Jack Aubrey in Master and Commander: The Far Side of the World, Russell Crowe learned how to play the violin and how to sail a tall ship.
18. To play legendary Chinese warrior Mulan, Yifei Lui trained in the art of "wushu", a form of contemporary Chinese martial arts that includes barehand and weapon-play styles.
19. Jesse Eisenberg had to master the art of close-up magic for his part in Now You See Me.
20. For her role in The Girl with the Dragon Tattoo, Rooney Mara enrolled in computer training and learned how to hack like her character in the film.
21. The most random skill of all might just be skinning a dead squirrel, which Jennifer Lawrence learned whilst filming Winter’s Bone.
22. Channing Tatum had to grapple with tap dancing for his role in Hail, Caesar!
23. During the production of his passion-project Chef, Jon Favreau learned how to cook professionally.
24. Just as Johnny Utah learns how to surf in Point Break, Keanu Reeves had to learn IRL!
25. Both Leonardo DiCaprio and Tom Hardy learned to speak an indigenous dialect for The Revenant.
