Robin Williams (1951-2014) was an actor and comedian who first became famous as the star of the TV show Mork & Mindy. That series also helped make his mark as a hailed master of improvisational comedy, whom writers of various productions learned it was often best to accommodate him considering his off-the-cuff humor was often better than their more carefully prepared material.
He later became known for his starring roles in the films Good Morning, Vietnam, Dead Poets Society, Mrs. Doubtfire and Good Will Hunting, for which he won an Academy Award for Best Supporting Actor. He was also well-known for voicing the Genie in Disney's Aladdin and its sequel, Aladdin and the King of Thieves.
He appeared in several Sesame Street segments:
- Williams uses his shoe to demonstrate what makes something alive (First: Episode 2749)
- The celebrity version of "Monster in the Mirror" (First: Episode 2835)
- Williams talks to Elmo about what you can do with a stick. (First: Episode 2835) The basic script was written by Sonia Manzano, but Williams improvised during taping, including the reference to Gene Shalit's moustache.
- Williams talks about his knees. (First: Episode 2765)
- Williams asks Elmo and the kids whether they would allow a nonsense talking, horned two-headed stranger to play baseball with them. The Two-Headed Monster shows up to play. (First: Episode 2795)
- Williams talks to a robin (Kevin Clash) about how similar and different they are, and the robin sings "Lullaby of Birdland." (First: Episode 2848)
- Williams and the Two-Headed Monster explain the word "conflict" in a Season 42 Word of the Day segment. (First: Episode 4280)