All of us know what it’s like to have a challenging day at work. But when you’re a Hollywood actor, a tough day at work might mean throwing yourself off a 6 story building, or wading through steaming waist-high sewage. Acting may seem like a cushy job, but making a movie is far from easy. Sci-fi and superhero movies sometimes put actors through the ringer, and some stars have come dangerously close to just walking off in the sunset. Behind some of your favorite movies stand a lot of disgruntled workers who required some pretty tense negotiations to get them to stay. Here are 10 Scenes That Almost Made Famous Actors Quit.