One of the most watched holiday movies every year, is Christmas Vacation. From Chevy Chase as Clark Griswold to Randy Quaid as cousin Eddie, you must agree that the complete cast of characters made this film great.

One of the many, was a guy who played a very important role. That actor was Brian Doyle-Murray as Clark's boss, Mr. Shirley. And he, in real life, is a brother to famous actor Bill Murray.

Here's a clip out of the movie where Mr. Shirley first appears:

Brian is an older brother to Bill in their family of nine children. Their father worked as a lumber salesman.

Brian is known for his gruff voice. See many interesting things about his career.