Acting
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.
Criminal Minds
2005
The Mentalist
2008
House
2004
Monk
2002
Medium
NCIS
2003
CSI: Crime Scene Investigation
2000
Bones
CSI: Miami
Blue Bloods
2010
S.W.A.T.
2017
The X-Files
1993
NCIS: Los Angeles
2009
Fringe
The Closer
Cold Case
Quantum Leap
1989
Crossing Jordan
2001
Homicide: Life on the Street
Judging Amy
1999