George Clooney — Syriana
Little known tidbit: George Clooney almost died on the set of Syriana. The mega-star broke his back during an incident that happened on set. The actor feared that he may never walk again and spiraled into an extremely dark place.
During his time in the hospital, there was actually more than one occasion where the actor even thought of calling it quits altogether. Thankfully, in the end, he recovered.
Dustin Hoffman – Kramer vs. Kramer
Playing a divorced couple, Dustin Hoffman and Meryl Streep got deep into character inevitably leading to some tension surfacing. At one point Hoffman was so deep in character that he actually ended up slapping Meryl Steep in the face.
The actress recounted that incident recently and expressed how much the Tootsie actor went too far.
Charlize Theron – Atomic Blonde
Like we saw with "Monster", Charlize Theron does not shy away from challenges, and while her transformation to becoming Aileen Wuornos got her an Oscar, her role as a spy in the film "Atomic Blonde" got her attention as a hardcore action star.
In 2017, the actress did all her own stunts and ended up enduring a lot of physical pain. Theron bruised her ribs during the filming of action scenes and at one point even clenched her teeth so hard that she cracked two of them.
Isla Fisher — Now You See Me
In the film "Now You See Me"Isla Fisher experienced a horrifying time while being trapped underwater. The scene dictated that she pretends to struggle to get free herself by her shackles in the water enclosure. Naturally, the struggles just look like really good acting and the actress was actually in trouble.
Her chains got stuck so she couldn't actually swim to free herself. The crew watching thought that she was just really convincing. Luckily the actress managed to pull the latch and set herself free.
Viggo Mortensen — The Lord of the Rings: The Two Towers
"The Lord of the Rings" had a lot going on. From the costume and set designs to the epic story-telling, organizing it was a massive undertaking. And with that amount of stress, sometimes you can lose track of "smaller" details, like your actor's whereabouts.
In one scene, Viggo Mortensen's character got shot in the back with an arrow meaning that the actor had to lie face down in a river. Unfortunately, the rover's current was a little stronger than everyone anticipated. With his heavy costume, the actor almost drowned.