William David Daniels, born on March 31, 1927, is an American actor whose distinguished career has spanned stage, film, and television for over seven decades. He is best known to audiences for three iconic roles: the gruff but brilliant Dr. Mark Craig on the acclaimed medical drama St. Elsewhere, the smooth, disembodied voice of the talking car KITT on the action series Knight Rider, and the wise, beloved teacher George Feeny on the coming-of-age sitcom Boy Meets World. These performances have cemented his status as one of television's most respected and versatile character actors.
Daniels began his career on the New York stage before making his film debut in the 1960s. He earned significant recognition for his supporting role as Mr. Braddock, the befuddled father of Dustin Hoffman's character, in the landmark 1967 film The Graduate. That same year, he appeared opposite Audrey Hepburn and Albert Finney in the romantic comedy Two for the Road. Daniels took on the historic role of founding father John Adams in the 1972 musical film 1776, a performance that showcased his strong singing voice and dramatic range. Remarkably, Daniels is noted for having portrayed three members of the prominent Adams political family across his career: John Adams, his cousin Samuel Adams, and his son John Quincy Adams.
On television, Daniels achieved his greatest fame. His portrayal of the demanding yet compassionate chief of surgery Dr. Mark Craig on St. Elsewhere from 1982 to 1988 earned him two Primetime Emmy Awards for Outstanding Supporting Actor in a Drama Series. Simultaneously, he lent his distinctive voice to the character of KITT (Knight Industries Two Thousand) on Knight Rider, a role he would reprise decades later in the 1991 television film Knight Rider 2000. From 1993 to 2000, he delighted a younger generation as the sage and often humorous principal George Feeny on Boy Meets World, a role that earned him four People's Choice Award nominations. He later returned to the character in the sequel series Girl Meets World. Earlier in his career, he also starred as the title character in the short-lived 1967 sitcom Captain Nice.
Beyond his acting, Daniels served the entertainment community as president of the Screen Actors Guild from 1999 to 2001, a tenure marked by his leadership during the 2000 commercial actors strike. Now in his late nineties, he remains a highly respected figure in Hollywood, celebrated for a career defined by intelligence, warmth, and a remarkable ability to bring iconic characters to life across multiple generations.