William Daniels (born March 31, 1927) is an American actor and former president of the Screen Actors Guild (from 1999 to 2001). He is known for his performances as John Adams in 1776, as Mr. Feeny in ABC's Boy Meets World, the voice of KITT in Knight Rider, and winning two Emmy Awards for the role of Dr. Mark Craig in St. Elsewhere.

Daniels was born in Brooklyn, New York. He graduated from Northwestern University in 1949 where he was a member of Sigma Nu fraternity. He has been married to actress and fellow Emmy Award-winner Bonnie Bartlett since June 30, 1951. They have two children.

William John 'Jack' Daniels (February 8, 1912 – November 27, 2004) was a British car engineer.

Born in New Marston, England, he worked alongside Sir Alec Issigonis on his two most noteworthy projects - the Mini and the Morris Minor.

Daniels died near Bournemouth, England after a two year battle with cancer.

William Daniels (born 1976 in Brighton) is an English artist.

Based in London, he produces oil paintings that recreate iconic historical works - portraits, landscapes, nudes, etc - using as subjects rough maquettes constructed from waste card and paper. For instance, his William Blake II is based on the Thomas Phillips portrait of William Blake. Other works recreated include Caravaggio's David with the Head of Goliath, Courbet's L'Origine du monde, and Turner's The Shipwreck.

He has shown work in many exhibitions including Waste Material at The Drawing Room, London; The Darkest Hour at Leisure Club Mogadishni, Copenhagen; William Daniels at Marc Foxx, Los Angeles; and William Daniels & Fiona Jardine at the Transmission Gallery, Glasgow. He is represented by Marc Foxx in Los Angeles and Vilma Gold in London.

He and his wife, actress Bonnie Bartlett, won Emmys for their portrayals of a married couple, Dr. and Mrs. Mark Craig, on the cult TV series "St. Elsewhere" (1982) in 1982.

As a child he was part of the Daniels Family song-and-dance troupe that traveled in and around the state of New York. His entire family appeared on one of the first experimental TV broadcasts in 1941.

Nominated for a Tony as Supporting Actor in a Musical for his lead role of John Adams in the 1969 musical "1776." He could not be nominated for lead actor because he did not then have star billing (i.e., above the title). Adams is clearly the lead role in 1776 (1972), so Daniels declined the nomination.

1949 Graduate of Northwestern University

(November 1999) Elected president of Screen Actors Guild upsetting incumbent Richard Masur, as well as candidate Angel Tompkins who conjoined her two names to call herself "Angeltompkins" so she could be listed first on the ballot(!) The SAG president serves a 2-year term.

Worked conscientiously to lose the Brooklyn accent he grew up with, so that he could obtain a wider range of roles. His adopted accent is close to the Boston dialect he used as Dr. Mark Craig on "St. Elsewhere" (1982).

One episode of "St. Elsewhere" (1982) called for Dr. and Mrs. Craig to visit Philadelphia. Inspired by returning to Independence Square, he sang a few lines of the song, "Sit Down, John" from 1776 (1972). The moment was included in the episode.

Is a member of Sigma Nu Fraternity

Often plays members of the famous Adams family of Early American history. Has played John Adams and his son John Quincy Adams and their cousin Samuel Adams.

While performing on both "St. Elsewhere" (1982) and "Knight Rider" (1982) in the 1980s, Daniels made goodwill visits to children's hospitals. He discovered that not many children were thrilled to meet an actor who played a doctor, but the fact that he voiced the talking car KITT always appealed to them, so he shifted emphasis during his visits. He entertained the children with KITT-styled phrases, and answered their questions about "Knight Rider" while hardly mentioning his other, larger acting role.

Played George Feeny who was the principal and a teacher at John Adams High School on the TV show "Boy Meets World" (1993). This is yet another John Adams connection for Daniels, who has portrayed him many times.

In an episode of "Boy Meets World" (1993), Daniels's character, George Feeny, is congratulating Cory on the quality of his film project. Cory then asks, "You think it's a great film?" George responds, "No, I think the Graduate is a great film," referencing his earlier role in Graduate, The (1967).

The characters that Daniels and his real-life wife, Bonnie Bartlett, played in "Boy Meets World" (1993) married each other in an episode of that series, just as they are in real life.