Web Reference: Marcus Giamatti is an American actor, musician, writer and director. He is the brother of Paul Giamatti and a regular cast member of Judging Amy. Marcus Giamatti is an actor who starred in Judging Amy, Flying Blind, and NCIS: Los Angeles. He is also a bass guitarist, a session musician, and the older brother of Paul Giamatti. Marcus Giamatti is a 35-year career working actor, with an MFA in Acting from the Yale School of Drama, where he received the Carole Dye Award for Excellence in Performance. Marcus is best known for the role of Peter Gray on the long running CBS Drama Judging Amy.
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Marcus Giamatti - Latest Information & Updates 2026 Information & Biography
Details: $68M - $90M
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Last Updated: April 2, 2026
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