Barton Fink
A playwright is hired by a big studio in Hollywood to write some scripts. He becomes disillusioned with the lifestyle and eventually has a psychological break. At the end of the film, we see a woman standing on the beach. The woman looks exactly like a photo that was hanging up in Fink's room. The director explained that he wasn't actually seeing the woman, but he was hallucinating her because she represented his lifestyle in Hollywood.