Here are interesting, short biographies of the prominent Seinfeld figures seen across the 180 episodes:

• Jerry Seinfeld (as Jerry Seinfeld) - - Lead actor in Seinfeld series. Born on April 29, 1954 in Brooklyn, NY. Grew up on Long Island (Massapequa, NY). Began a stand-up comedy career as soon as he graduated from Queens College. Career got a boost by appearing on a Rodney Dangerfield HBO special in 1976. Further career boost with appearances on the Tonight Show with Johnny Carson (1981), Late Show with David Letterman (1982), and the Merv Griffin Show. Appear 4 times as "Frankie" in the TV sitcom Benson. Teamed up with stand-up comedian colleague Larry David in 1989 to create Seinfeld. Jerry was married in 1999, and has 3 children.

• Jason Alexander (as George Costanza) - - Prime actor in Seinfeld series. Born as Jason Scott Greenspan on September 23, 1959 in Newark, New Jersey. Adopted the stage name of Jason Alexander while attending high school. Attended Boston University and left a year before graduation since he found acting work in New York City, with Broadway plays and movies. Jason won Broadway's 1989 Tony Award as Best Actor (Musical) for "Jerome Robbins' Broadway." Big Star Trek fan. The only of the 4 main characters in Seinfeld not to win an Emmy for work on the show. Married in 1981, and has 2 children.

• Michael Richards (as Cosmo Kramer) - - Prime actor in Seinfeld series. Born on July 24, 1949 in Culver City, Los Angeles, California. Graduated from Evergreen State College in Washington with a BFA in Drama. After a 2 year stint in the army, received a break on comedy special from Billy Crystal. Michael then earned a reular spot on the sitcom series "Friday" in 1980. He also appearned in several minor slapstick films. Finally, he landed the job of Cosmo Kramer on the Seinfeld series, and went on to win 3 Emmy awards and earn cult status. Since the Seinfeld series ended, he has had trouble gaining footing in a film career. A fledgling sitcom, "The Michael Richards Show", failed miserably in 2000. Michael Richards is divorced and has 1 daughter.

• Julia Louis-Dreyfus (as Elaine Benes) - - Prime actress in Seinfeld series. Born on January 13, 1961 in Manhattan, New York. Julia's parents divorced young, and she spent most of her childhood in Washington D.C. and New York. She is the daughter of French billionaire Gerard Louis-Dreyfus. Julia graduated from Northwestern University in Illinois in 1982, and met her husband there. She made her feature movie debut in the Woody Allen film, "Hannah and Her Sisters" in 1986. Both she and her husband, Brad Hall, appeared as as part of NBC's "Saturday Night Live" in the early 1980's. Had a TV Series ("Watching Ellie") in 2002, that was cancelled by NBC after 1 year. Julia is married and has 2 children.

• Barney Martin (as Morty Seinfeld) - - Supportng actor in Seinfeld series. Born on March 3, 1923 in Queens, NY. Died on March 21, 2005, in Studio City California. Was a New York City policeman for 20 years, before starting his acting career. Appeared on 21 episodes of Seinfeld, as Jerry Seinfeld's father, and husband of wife, Helen. Appeared in 65 different TV series and movies, including "Life Goes On", "The Golden Girls", "Murphy Brown", Murder, She Wrote", "Trapper John, M.D.", "The Odd Couple", and "Hill Street Blues". Married with 2 children (1 deceased).

• Liz Sheridan (as Helen Seinfeld) - - Supporting actress in Seinfeld series. Bron on April 10, 1929, in Westchester County, NY. Appeared in 22 Seinfeld episodes, as Jerry's overbearing, yet caring, mother. Liz started out in show business as a dancer. Although she did not marry him, she was engaged to James Dean. Her best friend is actress Elizabeth Montgomery. Appeared in over 64 movies and TV shows including "Blossom", "Empty Nest", "Melrose Place", "Murder, She Wrote", "Family Ties", "Cagney and Lacey", "Hill Street Blues", "The A-team", "Newhart", and "Kojak". Lize Sheridan is married with no kids.

• Wayne Knight (as Newman) - - Supporting actor in Seinfeld series. Born on August 7, 1995, in Cartersville, Georgia. Attend the University of Georgia for a short period of time. He was the first person cast for "Jurassic Park", after Steven Speilberg saw him in the "interview scene" for "Basic Instinct". Wayne Knight held his wedding ceremony in Michael Richard's house. Appeared on 47 episodes of Seinfeld. Appeared in over 61 different TV series and movies including "The Drew Carey Show", "Cheaper by the Dozen", "That '70's Show", "3rd Rock from the Sun" (12 times), "Spacejam", "JFK", "Bron on the Fourth of July", and "Dirty Dancing". Wayne Knight is divorced with no kids.

• Jerry Stiller (as Frank Costanza) - - Supporting actor in Seinfeld series. Born on June 8, 1927, in New York, New York. Part of the stellar husband-and-wife comedy team "Stiller & Meara" in the 1960's. Together, they appeared on the "Ed Sullivan Show" 36 times. Later in his career, he was revitalized playing the part of the arrogant father of George, on the Seinfeld series (appeared 28 times). Graduated from Syracuse University with a degree in Speech and Drama. Pursued a successful Broadway career in the 1970's. Subsequent to Seinfeld, is a hit in a supporting role in the comedy "The King of Queens". Has appeared on countless episodes of "The Mike Douglas Show", "The Flip Wilson Show", "The Tonight Show starring Johnny Carson", "The Carol Burnett Show", and "The Merv Griffin Show". Married with 2 children (accomplished actor Ben Stiller and accomplished acress Amy Stiller).

• Estelle Harris (as Estelle Costanza) - - Supporting actress in Seinfeld series. Born on April 4, 1932, in New York, New York. Escaped injury in 2001 after her car blew a tire and flipped outside Los Angeles. Played George's neurotic mother on the Seinfeld series, 28 times. Apeared in over 61 different TV series and movies, including "Mad About You", "Law and Order", "Brooklyn Bridge", "Night Court", and "Married with Children". Estelle is married with 3 kids.

• Len Lesser (as Uncle Leo) - - Supporting actor in Seinfeld series. Born on December 3, 1922, in New York, New York. Lesser is a veteran film and TV personality with 100's of credits on his resume, but didn't get true recognition until his sting as Uncle Leo, Jerry's uncle, on Seinfeld, in which he appeared 15 times. A big Detroit Tigers fan. Appeared on the following TV shows and movies: "ER", "Everybody Loves Raymond" (9 times), "Sabrina, the Tennage Witch", "Mad About You", "Kojak", "The Bob Newhart Show", "Papillon", "The Mod Squad", "Nonanza", "All in the Family", "Green Acres", "The Monkeys", "Get Smart", "My Favorite Martina", "The Munsters", "The Jack Benny Program", and "Dragent". Married with 3 children.

• Heidi Swedberg (as Susan Ross) - - Supporting actress in Seinfeld series. Born on March 3, 1966, in Honolulu, Hawaii. Best known as the fiancee of George Costanza on Seinfeld, who dies after licking cheap toxic wedding invitation envelopes, purchased by George. Appeared in 28 Seinfeld episodes. Has made appearances in 40 TV shows and movies including "Becker", "Gilmore Girls", "ER", "Providence", "Touched by an Angel", "Grace Under Fire", "Star Trek: Deep Space Nine", "Murder She Wrote", "Empty Nest", "Sisters", "Brooklyn Bridge", "Matlock", and "ThirtySomething". Marital status unknown.

• Patrick Warburton (as David Puddy) - - Supporting actor in Seinfeld series. Born on November 14, 1964, in Patterson, New Jersey. Studied Marine Biology in College (Orange Coast College). was a model for Bugle Boy Clothes. Appeared in 11 Seinfeld episodes, as Elaine's somewhat nonchalant, and low-IQ boyfriend. Has appeared in over 84 TV movies and shows including: "Family Guy" (39 times), "Buzz Lightyear of Star Command", "Grace Under Fire", "Mad About You", "Murphy Brown", and "Northern Exposure". Married with 4 children.

• John O'Hurley (as Mr. Peterman) - - Supporting actor in Seinfeld series. Born on October 9, 1956, in Kittery, Maine. Received a Bachelor's Degree in theatre from Providence College. O'Hurley was a director of public relations for the American Red Cross. Plays the President of the J. Peterman Catalog company on Seinfeld, boss of Elaine. In real life, he is a co-owner (with J. Peterman) of the real J. Peterman Catalog. After playing the role on Seinfeld, he was offered the opportunity to puy part of the company to bring it out of bankruptcy. As it turns out, they turned a profit the very first year that O'Hurley was part of the company. A financier and investor as well, he is a principal partner for Round One Investments in Los Angeles and Heritage Capital Advisors in Atlanta, two private-equity outfits. He also holds a big chunk of a restaurant chain and is an owner of the Alaskan airline Era Aviation. Has appeared in over 90 TV movies and shows including "Seinfeld" (21 episodes), "Boy Meets World", "Mad About You", "Melrose Place", "Murder, She Wrote", "Sisters", "Baywatch", "Frasier", and "General Hospital". Married to his second wife currently. Divorced from his first wife.

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