Son of William Shawn, the legendary editor of The New Yorker
As a child, staged musical puppet shows with his brother, Allen, for their parents and friends
Before breaking into acting, taught drama and Latin at the Trevor Day School in New York City
Our Late Night, the first play he wrote that was produced, was initially booed by off-Broadway audiences but went on to win the Obie award in 1975; he also won Obies for 1986's Aunt Dan and Lemon and 1990's The Fever
First appeared on stage was in the 1977 production of his translation of Niccolo Machiavelli's The Mandrake
Big-screen debut was in Woody Allen's romantic comedy Manhattan (1979); his best-known film role, in Rob Reiner's The Princess Bride, followed in 1987
Has appeared on numerous TV series, including The Cosby Show, Murphy Brown, Star Trek: Deep Space Nine and Gossip Girl