Marcus Giamatti is an American actor, best known for being a regular member of the cast of the CBS drama series Judging Amy. He is the younger brother of actor Paul Giamatti.

KNOWN FOR

The Mentalist
2009
NCIS
2010
CSI: Crime Scene Investigation
2009
Criminal Minds
2005
Bones
2014
House
2009
CSI: Miami
2011
NCIS: Los Angeles
2012
S.W.A.T.
2017
Blue Bloods
2022
The X-Files
2002
Monk
2009

FILMOGRAPHY

All
Movies
TV
Acting
54
2026
Echoes of Tomorrow
as Frank Thompson (segment "Segment #1")
2022
Blue Bloods
as Gerry Gertz
2022
Bosch: Legacy
as Simon Wakefield
2018
Get Shorty
2017
S.W.A.T.
as Professor Marc Lasky
2016
CSI: Cyber
as Artie Sneed
2015
The Curse of Downers Grove
as Rich
2015
The Exes
as Don
2015
Big Time in Hollywood, Fl
as Detective Jim Zdorkin
2014
Starving in Suburbia
as Michael
2014
Perception
as Joel (Conley's Agent)
2014
Bones
as Forrest Wakefield
2014
Mighty Med
as Sonic Shriek
2013
Franklin & Bash
as Golf Club Owner
2012
Blue Lagoon: The Awakening
as Principal Thomas
2012
Common Law
as Derek Winfield
2012
NCIS: Los Angeles
as CIA Agent Michael Snyder
2012
Revenge
as Dr. Ray Clemons
2011
The Closer
as Glen Lynch
2011
CSI: Miami
as Hugh Parker
2010
The Chosen One
as Freddy
2010
NCIS
as Victor Tillman
2010
Fringe
as Ray Duffy
2010
The Defenders
as Lawyer
2010
Lie to Me
as Fentris
2009
Medium
as Lance Pauling
2009
CSI: Crime Scene Investigation
as Chevy Cigs
2009
Monk
as John Keyes
2009
The Mentalist
as Gabriel Fanning
2009
House
as Jeffrey Keener
2008
Life
as Zak Sutter
2007
On the Doll
as Uncle Lou
2007
Cold Case
as Larry Kenick
2007
Crossing Jordan
as Donald Hagen
2005
Criminal Minds
as Dr. Barry Landman
2002
The X-Files
as John Gillnitz
2001
The Business of Strangers
as Robert
2000
Hamlet
as Guildenstern
1999
Pirates of Silicon Valley
as Dan Kottke
1999
Judy Berlin
as Eddie Dillon
1999
Judging Amy
as Peter Gray
1999
Homicide: Life on the Street
as Bernard Abrams
1996
Dream On
as Salesman
1994
3 Ninjas Kick Back
as Announcer
1994
Jimmy Hollywood
as BMW Preppie
1994
Monty
1993
Living Single
as Jack Peabody
1992
Quantum Leap
as Rick Upfield
1992
Flying Blind
as Ted Sharperson
1991
Necessary Roughness
as Sargie 'Fumblina' Wilkinson
1991
Aftermath: A Test of Love
as Luke
1991
Hunter
as Jack Kane
1990
Mr. & Mrs. Bridge
as Gil Davis
Is It Time?
as Frank