Robin Williams as John Keating in "Dead Poets Society"

Robin McLaurin Williams (July 21, 1951 – August 11, 2014) was an American actor and comedian. Known for his improvisational skills and the wide variety of characters he created on the spur of the moment and portrayed on film, in dramas and comedies alike, he is regarded as one of the best comedians of all time.

Williams began performing stand-up comedy in San Francisco and Los Angeles during the mid-1970s, and rose to fame playing the alien Mork in the ABC sitcom “Mork & Mindy” (1978–1982). After his first starring film role in “Popeye” (1980), he starred in several critically and commercially successful films including “The World According to Garp” (1982), “Moscow on the Hudson” (1984), “Good Morning, Vietnam” (1987), “Dead Poets Society” (1989), “Awakenings” (1990), “The Fisher King” (1991), “Patch Adams” (1998), “One Hour Photo” (2002), and “World's Greatest Dad” (2009). He also starred in box office successes such as “Hook” (1991), “Aladdin” (1992), “Mrs. Doubtfire” (1993), “Jumanji” (1995), “The Birdcage” (1996), “Good Will Hunting” (1997), and the “Night at the Museum” trilogy (2006–2014). He was nominated for four Academy Awards, winning Best Supporting Actor for “Good Will Hunting". He also received two Primetime Emmy Awards, six Golden Globe Awards, two Screen Actors Guild Awards, and five Grammy Awards.

David Walton - actor

Ethan Hawke played Todd Anderson in the movie.