Samuel Atkinson "Sam" Waterston is an American actor and occasional producer and director.
Among other roles, he is noted for his Academy Award-nominated portrayal of Sydney Schanberg in 1984's The Killing Fields, and his Golden Globe- and Screen Actors Guild Award-winning portrayal of Jack McCoy on the NBC television series Law & Order.
He has been nominated for multiple Golden Globe-, Screen Actors Guild-, BAFTA- and Emmy Awards, having starred in over eighty film and television productions during his forty-five year career.
Allmovie has characterised Waterston as having "cultivated a loyal following with his quietly charismatic, unfailingly solid performances."
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