Samuel Atkinson Waterston (born November 15, 1940) is an acclaimed American actor with a career that spans across theater, television, and film. Known for his versatile acting skills, he has received numerous accolades including a Primetime Emmy Award, Golden Globe Award, and Screen Actors Guild Award. His acting career has spanned over five decades in stage and screen, leading to his induction into the American Theater Hall of Fame in 2012 and a star on the Hollywood Walk of Fame in 2010.

Waterston began his career on the New York stage, impressing audiences with numerous Shakespearean performances. His portrayal of Abraham Lincoln in the Broadway play, 'Abe Lincoln in Illinois' earned him a Tony Award nomination. He transitioned successfully to the big screen, earning critical acclaim for roles in 'The Great Gatsby' and 'The Killing Fields', the latter of which led to an Academy Award nomination. Waterston also had notable roles in several Woody Allen films, demonstrating his ability to excel in a variety of genres. He is perhaps best known for his portrayal of Jack McCoy on the NBC crime series 'Law & Order', a role for which he received a Screen Actors Guild Award and several Golden Globe and Emmy Award nominations. Waterston's consistent and high-level performances have cemented his place as one of America's most respected actors.