Marcus Giamatti
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.
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Acting Credits
Acting
TV
House
as Jeffrey Keener
2004
TV
The Mentalist
as Gabriel Fanning
2008
TV
Criminal Minds
as Dr. Barry Landman
2005
TV
The X-Files
as John Gillnitz
1993
TV
Bones
as Forrest Wakefield
2005
TV
Fringe
as Ray Duffy
2008
TV
NCIS
as Victor Tillman
2003
TV
CSI: Miami
as Hugh Parker
2002
TV
Lie to Me
as Fentris
2009
TV
S.W.A.T.
as Professor Marc Lasky
2017
Movie
Blue Lagoon: The Awakening
as Principal Thomas
2012
TV
CSI: Crime Scene Investigation
as Chevy Cigs
2000
TV
Monk
as John Keyes
2002
TV
NCIS: Los Angeles
as CIA Agent Michael Snyder
2009
TV
Blue Bloods
as Gerry Gertz
2010
TV
Revenge
as Dr. Ray Clemons
2011
TV
Quantum Leap
as Rick Upfield
1989
Movie
Pirates of Silicon Valley
as Dan Kottke
1999
TV
Medium
as Lance Pauling
2005
TV
Cold Case
as Larry Kenick
2003
TV
The Closer
as Glen Lynch
2005
Movie
3 Ninjas Kick Back
as Announcer
1994
TV
Perception
as Joel (Conley's Agent)
2012
TV
Life
as Zak Sutter
2007