Given the question: Formulate an answer to this elaborate question: What American actor, best known for his role as Gunnery Sergeant Emil Foley in the 1982 film "An Officer and a Gentleman", and his role as Fiddler in the 1977 ABC television miniseries "Roots", was also nominated for Best Actor at the Emmys for Backstairs at the White House?
The answer is:
Louis Gossett Jr.