What About Bob? is a 1991 American comedy film directed by Frank Oz and starring Bill Murray and Richard Dreyfuss. Murray plays Bob Wiley, a mentally unstable patient who follows his egotistical psychotherapist, Dr. Leo Marvin (Dreyfuss), on vacation. When Bob befriends the members of Leo's family and they help each other overcome their problems, the patient's continued presence pushes the doctor over the edge. The film received positive reviews and grossed $63.7 million in the US.