Samuel Atkinson Waterston, known simply as Sam Waterston, is an esteemed American actor celebrated for his extensive work in theater, television, and film. Born on November 15, 1940, in Cambridge, Massachusetts, he has captivated audiences for over five decades, earning recognition for his compelling performances and depth in character portrayal. Waterston is perhaps best known for his role as Executive Assistant District Attorney Jack McCoy on the iconic NBC series Law & Order, a character that solidified his place in television history and garnered him several prestigious award nominations.

Waterston's early life laid the foundation for his illustrious career. He studied at the Sorbonne in Paris and also attended the American Actors Workshop, which helped hone his craft. He began his acting journey on the New York City stage, where he made a name for himself with performances in various revivals of classic works, particularly those of Shakespeare. His time at the Public Theatre is marked by notable productions such as Indians (1969), The Trial of Catonsville Nine (1970), A Doll's House (1975), Hamlet (1975), Measure for Measure (1977), and Benefactors (1980). His portrayal of Abraham Lincoln in Abe Lincoln in Illinois (1993) earned him a nomination for a Tony Award for Best Actor in a Play.

In film, Waterston's career took off with his role as Nick Carraway in The Great Gatsby (1974), which led to a Golden Globe nomination. His performance as Sydney Schanberg in The Killing Fields (1984) was particularly noteworthy, earning him an Academy Award nomination for Best Actor. Throughout his cinematic career, he collaborated with renowned director Woody Allen, appearing in films such as Interiors (1978), Hannah and Her Sisters (1986), September (1987), and Crimes and Misdemeanors (1989). Other significant film roles include performances in Hopscotch (1980), Heaven's Gate (1980), The Man in the Moon (1991), Serial Mom (1994), Nixon (1995), Miss Sloane (2016), and On the Basis of Sex (2018).

Waterston's most enduring legacy is undoubtedly his role in Law & Order, which he appeared in from 1994 to 2010 and reprised in 2022. His portrayal of Jack McCoy earned him a Screen Actors Guild Award, along with nominations for both a Golden Globe Award and an Emmy Award. Following his work in Law & Order, he took on the role of Charlie Skinner in The Newsroom (2012-2014), created by Aaron Sorkin, further showcasing his versatility as an actor. He was also BAFTA-nominated for his performance as J. Robert Oppenheimer in the BBC miniseries Oppenheimer (1980).

In addition to his numerous accolades, Waterston received a star on the Hollywood Walk of Fame in 2010 and was inducted into the American Theater Hall of Fame in 2012, recognizing his significant contributions to the world of performance. As of 2023, he continues to work in the industry, showcasing his enduring talent and passion for the craft. Waterston remains a respected figure in the entertainment world, known for his dedication to his roles and the depth he brings to every performance. His career is a testament to the art of acting, and he continues to inspire both audiences and aspiring actors alike.