A successful psychotherapist loses his mind after one of his most dependent patients, an obsessive-compulsive neurotic, tracks him down during his family vacation.
 
No review.  Just a quote from the movie.
 
Dr. Leo Marvin: I want some peace and quiet!
Bob Wiley: Well, I'll be quiet.
Siggy: I'll be peace!
 
Nuff said.
 
FUN FACT:  In interviews both Bill Murray and Richard Dreyfuss admitted that they did not get along during filming.