The actor in the Snickers – Your’re not you when you’re hungry “Coach” commercial is:
Robin Williams IMDB
Robin Williams is a Academy Award winning comedian and actor who has starred in many movies and television shows. Robin Williams’ notable movies include Good Will Hunting, Mrs. Doubtfire and Night at the Museum. Williams is currently starring in the CBS television series The Crazy Ones, and has performed many stand-up routines throughout his career.