Michael Cassidy is an American film and television actor. He is best known for his role as Zach Stevens on The O.C. and as Tyler Mitchell on the TBS comedy Men at Work. He portrayed Jonathan Walsh on comedy People of Earth from the show's start in 2016 until its 2018 cancellation.
He went to Los Angeles in 2004 to audition for Superman Returns (2006). He didn't get
the part but impressed McG, then the film's director and an executive
producer of The O.C. (2003), who got him an audition.