Younger daughter, Lindsay Crystal, is a filmmaker.
His famous uncle, record producer Milton Gabler, founded Commodore Records and later Decca Records (which turned down The Beatles), where he produced the Bill Haley hit "(We're Gonna) Rock Around the Clock".
He appeared in the music video and sang in the choir on the song "Voices That Care".
Became a grandfather for the 1st time at age 55 when his daughter Jennifer Crystal Foley gave birth to a daughter, Ella Ryan Foley, on June 20, 2003.
Attended Marshall University in Huntington, West Virginia for his freshman year on a baseball scholarship but on his arrival was told freshman baseball was cancelled due to budget cuts. He did not return for the sophomore year choosing to attend community college before transferring to NYU.
He was Jay Leno's very first guest on May 25, 1992 when Jay took over the late night throne vacated by Johnny Carson on May 22, 1992.
Is a partial owner of the Arizona Diamondbacks, and is a long time and huge fan of the New York Yankees. He is also a huge fan of the Los Angeles Clippers.
Was cast as Rob Reiner's best friend in the All in the Family (1971) episode, All in the Family: New Year's Wedding (1976), and became his best friend in real life.
Was introduced to wife by close friend, Steve Kohut.
When he was a child, one of his babysitters was Billie Holiday.
His father, Jack Crystal, was a concert promoter who also ran a famous record store on New York City's 42nd Street.
Billy claims that his wife, Janice Crystal, was his first and only date.
Biography in: "Who's Who in Comedy" by Ronald L. Smith, pg. 124-126. New York: Facts on File, 1992. ISBN 0816023387
Attended and graduated from Long Beach High School in Long Beach, New York. Class of 1965 who voted him "Most Popular".
In his role imitating real-life character Fernando Lamas, he hit #58 on the Billboard Hot 100 singles chart in 1984 with the catchy and comedic "You Look Mahvelous" which featured Paul Shaffer on keyboards.
Wrote the children's book, "I Already Know I Love You", dedicated to Ella Ryan Foley, his granddaughter, with illustrations by Elizabeth Saylos.
Auditioned for the role of Jack Tripper on Three's Company (1976) - the character of a straight man impersonating a gay man. Ironically, he went on to play the role of Jody Dallas on Soap (1977) - the first openly gay character on prime-time network television.
Won a Special Theatrical Event Tony Award in 2005 for his one-man show, "700 Sundays", described as an "autobiographical journey". In November 2013, Crystal is set to bring the show back to Broadway.
Is a huge fan of the Zach Braff sitcom Scrubs (2001), and donated a clip of When Harry Met Sally... (1989) for an episode.
Considered for the role of Wilbur Turnblad in Hairspray (2007), which went to Christopher Walken.
Used to be the opening act for Sammy Davis Jr..
Good friends with Serbian NBA superstar Vlade Divac.
Recipient of the Kennedy Center's 2007 Mark Twain Prize for American Humor.
On March 12, 2008 as a 60th birthday gift, he signed a one day minor league contract with New York Yankees. On March 13, 2008, he played his only game with the Yanks vs. the Pittsburgh Pirates at DH wearing #60. In his first and only at bat, he made contact with a foul ball but struck out. He received a standing ovation. Just one day later, the Yanks officially released him.
Is one of the few non-African Americans on Saturday Night Live (1975) to perform in a "blackface" routine, but in full make-up prosthetics and as a realistic, non-stereotypical character.
Studied drama at HB Studio in Greenwich Village, New York City.
His acting mentor was Katherine Helmond.
Has appeared with Robin Williams in four films: In Search of Dr. Seuss (1994), Hamlet (1996), Fathers' Day (1997), Deconstructing Harry (1997) and a cameo in Friends (1994).
Has appeared with David Paymer in four films: City Slickers (1991), Mr. Saturday Night (1992), City Slickers II: The Legend of Curly's Gold (1994) and In Search of Dr. Seuss (1994).
He was awarded a Star on the Hollywood Walk of Fame at 6925 Hollywood Boulevard in Hollywood, California on June 4, 1991.
His paternal grandparents were Russian Jewish immigrants. His maternal grandfather was an Austrian Jewish immigrant, and his maternal grandmother was born in New York, to a Russian Jewish father and a Lithuanian Jewish mother (from Ariogala, Kaunas).
He has two daughters with his wife, Janice: Jennifer Crystal Foley and Lindsay Crystal.
He has two older brothers: Joel and Richard Crystal.
Taught math, wood shop, and girls gym at Long Beach High School and in Long Beach, New York.
Holds a BFA in television direction from New York University.
Close friends with Whoopi Goldberg, and Robin Williams.
He appeared in three films with Robin Williams: Hamlet (1996), Fathers' Day (1997) and Deconstructing Harry (1997).
Was originally offered the role of Buzz Lightyear in Toy Story (1995) but he turned it down. After he watched the movie he said that turning down the role was the biggest mistake of his career.
He wrote the screenplay for "America's Sweethearts" long before it was produced. He intended himself to play the lead. It was a response to him and Meg Ryan not appearing in any more films together. By the time the film was made, the director felt Roth was too old to play the lead role of Eddie Thomas. So Crystal took the smaller part of Lee.
He collected autographed baseballs and baseball cards.
Directed one actor to an Academy Award nominated performance: David Paymer in Mr. Saturday Night (1992).