Waterston, he of the full-figured eyebrows and homespun charm, is a longtime theater and film actor who has spent more than a decade on Law & Order.

The Yale grad took his acting career seriously from the start: He studied the craft at the Sorbonne and the American Actors Workshop before appearing in the 1967 romp Fitzwilly starring Dick Van Dyke. Waterston eventually moved to larger roles in films like 1974's The Great Gatsby and the 1984 drama The Killing Fields, for which he earned an Oscar nomination. A longtime favorite of Woody Allen, Waterston appeared in Interiors, Hannah and Her Sisters, and Crimes and Misdemeanors in the 1980s, but only earned widespread fame by joining the cast of Law & Order as ADA Jack McCoy in 1994, clocking 16 seasons with the franchise. He also has often collaborated with the Public Theater in Shakespearean works like Hamlet and King Lear.

Waterston met his second wife, Lynn, in 1972, and they have four children: James, Elisabeth, Katherine and Graham. [Image via Getty]