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.
Pirates of Silicon Valley
(Dan Kottke)
The Business of Strangers
(Robert)
Judy Berlin
(Eddie Dillon)
The Chosen One
(Freddy)
3 Ninjas Kick Back
(Announcer)
Hamlet
(Guildenstern)
The Curse of Downers Grove
(Rich)
Starving in Suburbia
(Michael)
Mr. & Mrs. Bridge
(Gil Davis)
Jimmy Hollywood
(BMW Preppie)
On the Doll
(Uncle Lou)
Blue Lagoon: The Awakening
(Principal Thomas)
Necessary Roughness
(Sargie 'Fumblina' Wilkinson)
Medium
(Lance Pauling)
CSI: Crime Scene Investigation
(Chevy Cigs)
Judging Amy
(Peter Gray)
Monk
(John Keyes)
Cold Case
(Larry Kenick)
Crossing Jordan
(Donald Hagen)
Life
(Zak Sutter)
Quantum Leap
(Rick Upfield)
Criminal Minds
(Dr. Barry Landman)
Flying Blind
(Ted Sharperson)
The X-Files
(John Gillnitz)
The Mentalist
(Gabriel Fanning)
Homicide: Life on the Street
Hunter
(Jack Kane)
Monty
Common Law
Perception
(Joel (Conley's Agent))
The Exes
(Don)
NCIS: Los Angeles
(CIA Agent Michael Snyder)
House
(Jeffrey Keener)
Big Time in Hollywood, Fl
(Detective Jim Zdorkin)
Revenge
(Dr. Ray Clemons)
Franklin & Bash
CSI: Cyber
(Artie Sneed)
Blue Bloods
(Gerry Gertz)
Bosch: Legacy
(Simon Wakefield)
Get Shorty
NCIS
(Victor Tillman)
Dream On
(Salesman)
Bones
(Forrest Wakefield)
Fringe
(Ray Duffy)
Mighty Med
(Sonic Shriek)
The Closer
(Glen Lynch)
The Defenders
(Lawyer)