Critics and viewers alike have long expressed admiration for actors who achieve physical transformations to prepare for movie roles. Think of Natalie Portman getting into ballerina shape for Black Swan , or Tom Hardy gaining muscle and cutting off part of his face to play Bane in The Dark Knight Rises . But what about actors who do this for movies that turn out to be absolutely terrible? For example:

4 Jared Leto

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In 2007, Jared Leto put on 60 pounds for his starring role in Chapter 27, a film about the fat dude who shot John Lennon. In the process, he managed to give himself gout. Near the end of shooting, the guy was in so much pain from the shock weight gain that he "couldn't walk for long distances" and had to use a wheelchair. Oh, and in case you're thinking that at least he got to let himself go and eat a bunch of delicious food, note that he did it by stuffing himself with melted ice cream laced with olive oil and soy sauce.

The Result

Chapter 27 got a whopping 18 percent on Rotten Tomatoes and earned $56,000 at the U.S. box office on a budget of about $5 million.