The Birds
The Birds is an Alfred Hitchcock classic horror film, yet it was surrounded by controversy due to his strained relationship with its main actress, Tippi Hendren. Reportedly, Hendren did not appreciate having to work with real birds that attacked her, and she was left completely exhausted from the experience.
The Revenant
Leonardo DiCaprio is known to be a dedicated actor, and his method acting helps him get into roles completely. He ate a completely raw diet and slept inside of animal carcasses to prepare for his role in The Revenant, which is pretty interesting to hear as he is a vegan. At least all of this hard work earned him his first Academy Award.