I saw part of a movie. Horror, or psychological thriller. It contained crazy people who invaded a home. The woman was getting out of the shower, the man in a wheelchair. The woman was raped while the man was forced to watch.

The movie you're describing sounds like "The Woman" (2011), directed by Lucky McKee. It involves a feral woman who is captured by a man and his family, leading to disturbing and violent situations. This film is known for its intense psychological horror elements and contains scenes of brutal abuse and exploitation. If this isn't the right movie, can you provide any additional details that might help narrow it down?