"What About Bob?" is a 1991 American black comedy film directed by Frank Oz and starring Bill Murray and Richard Dreyfuss. The plot revolves around Bob Wiley, a mentally unstable patient who follows his egotistical psychotherapist Dr. Leo Marvin (Dreyfuss) on vacation. When Bob befriends the other members of Leos family, the patient's problems push the doctor over the edge. The film received positive reviews and grossed $63.7 million in the US.