
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.
tvBosch: Legacy
2022 · Simon Wakefield
tvS.W.A.T.
2017 · Professor Marc Lasky
tvGet Shorty
2017
movieThe Curse of Downers Grove
2015 · Rich
tvBig Time in Hollywood, Fl
2015 · Detective Jim Zdorkin
tvCSI: Cyber
2015 · Artie Sneed
movieStarving in Suburbia
2014 · Michael
tvMighty Med
2013 · Sonic Shriek
tvPerception
2012 · Joel (Conley's Agent)
movieBlue Lagoon: The Awakening
2012 · Principal Thomas
tvCommon Law
2012 · Derek Winfield
tvThe Exes
2011 · Don
tvRevenge
2011 · Dr. Ray Clemons
tvFranklin & Bash
2011 · Golf Club Owner
tvBlue Bloods
2010 · Gerry Gertz
tvThe Defenders
2010 · Lawyer
movieThe Chosen One
2010 · Freddy
tvNCIS: Los Angeles
2009 · CIA Agent Michael Snyder
tvLie to Me
2009 · Fentris
tvThe Mentalist
2008 · Gabriel Fanning
tvFringe
2008 · Ray Duffy
movieOn the Doll
2007 · Uncle Lou
tvLife
2007 · Zak Sutter
tvCriminal Minds
2005 · Dr. Barry Landman
tvBones
2005 · Forrest Wakefield
tvThe Closer
2005 · Glen Lynch
tvMedium
2005 · Lance Pauling
tvHouse
2004 · Jeffrey Keener
tvCold Case
2003 · Larry Kenick
tvNCIS
2003 · Victor Tillman
tvCSI: Miami
2002 · Hugh Parker
tvMonk
2002 · John Keyes
tvCrossing Jordan
2001 · Donald Hagen
movieThe Business of Strangers
2001 · Robert
movieHamlet
2000 · Guildenstern
tvCSI: Crime Scene Investigation
2000 · Chevy Cigs
movieJudy Berlin
1999 · Eddie Dillon
tvJudging Amy
1999 · Peter Gray
moviePirates of Silicon Valley
1999 · Dan Kottke
movieJimmy Hollywood
1994 · BMW Preppie
movie3 Ninjas Kick Back
1994 · Announcer
tvMonty
1994
tvThe X-Files
1993 · John Gillnitz
tvLiving Single
1993 · Jack Peabody
tvHomicide: Life on the Street
1993 · Bernard Abrams
tvFlying Blind
1992 · Ted Sharperson
movieNecessary Roughness
1991 · Sargie 'Fumblina' Wilkinson
movieAftermath: A Test of Love
1991 · Luke
movieMr. & Mrs. Bridge
1990 · Gil Davis
tvDream On
1990 · Salesman
tvQuantum Leap
1989 · Rick Upfield
tvHunter
1984 · Jack Kane
movieIs It Time?
— · Frank