Marcus Giamatti

Marcus Giamatti

Highest Rated: 89% Pirates of Silicon Valley (1999)

Lowest Rated: 15% The Curse of Downers Grove (2015)

Birthday: Oct 3, 1961

Birthplace: New Haven, Connecticut, USA

This tall, curly-haired son of former Major League Baseball commissioner A Bartlett Giamatti and older brother of actor Paul Giamatti, began his career with a one-shot appearance in a TV commercial at age nine. After training at Yale, Marcus Giamatti embarked on a stage career that included work in regional theaters before he landing a role in a 1989 Lincoln Center staging of "Measure for Measure." The following year, he broke into features in "Mr. and Mrs. Bridge" and followed with roles in the formulaic gridiron comedy "Necessary Roughness," starring Scott Bakula, and the CBS movie "Aftermath: A Test of Love" (both 1991), as well as guesting that year on NBC's "Hunter." A 1992 episode of "Quantum Leap" reunited him with Bakula, and he finally achieved a more prominent profile as Corey Parker's slick, unctuous office mate in the Fox sitcom "Flying Blind" (1992-93). Between film and movie assignments, Giamatti returned to the stage, co-starring with his brother in Michael Cristofer's 1996 two-character Off-Broadway play "The Blues Are Running." He was featured the next year in Horton Foote's Pulitzer-winning "The Young Man From Atlanta" alongside heavyweights Rip Torn and Shirley Knight. Though he continued to land small roles in features (i.e., Barry Levinson's "Jimmy Hollywood" 1994) and TV-movies (e.g., TNT's critically-acclaimed "Pirates of Silicon Valley" 1999), Giamatti's next great opportunity came as a series regular again in "Judging Amy" (CBS, 1999-2005), playing Amy Brenneman's uptight brother Peter Gray. He also portrayed Guildenstern in a cable version of "Hamlet" (Odyssey, 2000), directed by and starring Campbell Scott.

Highest rated movies

Pirates of Silicon Valley
The Business of Strangers
Mr. & Mrs. Bridge
The Curse of Downers Grove




15% 9% The Curse of Downers Grove Rich (Character) - 2015
No Score Yet 60% Thinspiration Michael (Character) - 2014
No Score Yet 44% On the Doll Uncle Lou (Character) - 2008
81% 51% The Business of Strangers Robert (Character) $1.0M 2001
70% No Score Yet Hamlet Guildenstern (Character) - 2000
89% 92% Pirates of Silicon Valley Dan Kottke (Character) - 1999
No Score Yet No Score Yet Path to Paradise: The Untold Story of the World Trade Center Bombing Agent Atkinson (Character) - 1997
80% 44% Mr. & Mrs. Bridge Gil Davis (Character) $5.0M 1990


No Score Yet 88% Blue Bloods Gerry Gertz (Guest Star) 2022
68% 69% Tommy Fred (Guest Star) 2020
No Score Yet 68% S.W.A.T. Professor Lasky (Guest Star) 2017
No Score Yet 90% Chicago P.D. Gerry (Guest Star) 2016
34% 36% CSI: Cyber Unknown (Guest Star) 2015-2016
28% 42% Mind Games Unknown (Guest Star) 2014
90% 81% Bones Forrest Wakefield (Guest Star) 2014
61% 91% Franklin & Bash Unknown (Guest Star) 2013
No Score Yet 67% NCIS: Los Angeles Unknown (Guest Star) 2012-2013
100% 96% Bunheads Mr. Cramer (Guest Star) 2013
67% 75% Vegas Scotty Garrity (Guest Star) 2012
69% 79% Revenge Unknown (Guest Star) 2012
83% 85% The Closer Glen Lynch (Guest Star) 2011
No Score Yet 63% CSI: Miami Unknown (Guest Star) 2011
81% 100% Detroit 1-8-7 Unknown (Guest Star) 2011
74% 73% The Defenders Lawyer 2 (Guest Star) 2010
90% 77% Fringe Ray Duffy (Guest Star) 2010
No Score Yet 88% Lie to Me Fentris (Guest Star) 2010
No Score Yet 83% NCIS Victor Tillman (Guest Star) 2010
No Score Yet 80% CSI: Crime Scene Investigation Unknown (Guest Star) 2009
90% 96% House Keener (Guest Star) 2009
No Score Yet 76% Medium Unknown (Guest Star) 2009
No Score Yet 88% The Mentalist Gabriel Fanning (Guest Star) 2009
91% 89% Monk John Keyes (Guest Star) 2009
62% 100% Tell Me You Love Me Jeff (Guest Star) 2007
No Score Yet 84% Cold Case Unknown (Guest Star) 2007
No Score Yet 85% Criminal Minds Unknown (Guest Star) 2005
No Score Yet No Score Yet Judging Amy Peter Gray (Character) 1999-2005
74% 85% The X-Files John Gillnitz (Guest Star) 2002
No Score Yet No Score Yet Cosby Unknown (Guest Star) 1998
73% No Score Yet Flying Blind Unknown (Character) 1992-1993
No Score Yet 85% Quantum Leap Rick Upfield (Guest Star) 1992
No Score Yet No Score Yet Hunter Jack Kane (Guest Star) 1991