Samuel Atkinson 'Sam' Waterston (born November 15, 1940) is an American actor, 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.' In January 2010, he received a star on the Hollywood Walk of Fame. Waterston, the third of four siblings, (Roberta, George and Ellen) was born in Cambridge, Massachusetts. His mother, Alice Tucker (ne Atkinson), was an American Mayflower descendant and worked as a landscape painter.
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