Michael Cassidy
Acting
Michael Cassidy (born March 20, 1983) 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.
TV Shows(25)
Ballard
Aaron
2025
Found
Christian Evans
2023
Fatal Attraction
Clay Bishop
2023
Waco: The Aftermath
Bill Johnston
2023
Resident Alien
Dr. Ethan Stone
2021
Mythic Quest
Peter Cromwell
2020
Good Trouble
Asher Bowen
2019
The Rookie
Caleb Wright
2018
Station 19
Peter
2018
The Guest Book
2017
People of Earth
Jonathan Walsh
2016
The Magicians
James
2015
Stalker
Brian Mitchell
2014
Masters of Sex
Dr. Malcolm Toll
2013
Men at Work
Tyler
2012
Scandal
Travis Harding
2012
Happy Endings
Male Lead
2011
Inside Room 334
Seth
2010
Castle
Greg McClintock
2009
Privileged
Charlie Hogan
2008
Hidden Palms
Cliff Wiatt
2007
The O.C.
Zach Stevens
2003
Smallville
Grant Gabriel
2001
Law & Order: Special Victims Unit
Derek Simpson
1999
MacGyver
Robert Julian
1985
Movies(18)
Gail Daughtry and the Celebrity Sex Pass
Tom
2026
Hypochondriac
NP Chaz
2025
Army of the Dead
Sgt. Kelly
2021
Delivered
Tom
2020
Breaking Fast
Kal
2020
Jingle Around the Clock
Max
2018
Dog Days
Dr. Mike Stone
2018
The Dare Project
Johnny
2018
The Stray
Mitch Davis
2017
Batman v Superman: Dawn of Justice
Jimmy Olsen
2016
Night of the Living Deb
Ryan Waverly
2015
The Guilt Trip
Fake Andy (uncredited)
2012
Argo
Jordan's Analyst
2012
Boys On Film 3: American Boy
Johnny (segment "Dare")
2009
Zoom
Dylan West / Houdini
2006
Boys Life 5
2006
Dare
Johnny
2005
The Girl from Monday
Ted
2005