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