Trivia

In the film musical Grease (1978), Dinah managed to nab the plucky, sexpot role of "Marty Maraschino", despite the fact she lacked in dancing and singing skills. She faked her way through auditions and personality, alone, got her the part. Later, when it came down to doing the choreography, Dinah remained conveniently hidden in the background.

Mother, with husband Arthur Mortell, of sons Dashiell Manoff Mortell (March 26, 1997 - January 7, 2017) and twins, Oliver Mortell and Desi Mortell (b. January 18, 2002).

Had her first son Dashiell at age 41. Later she also had twin sons, Oliver and Desi, a week before her 46th birthday.

Won Broadway's 1980 Tony Award as Best Actress (Featured Role - Play) for "I Ought to be in Pictures," a part she recreated in the film version of the same title, I Ought to Be in Pictures (1982).

Daughter of Arnold Manoff and Lee Grant.

Guest starred in The Golden Girls (1985) and starred in the spin-off Empty Nest (1988). Her mother Lee Grant turned down a starring role in The Golden Girls.

In 1975 (at age 19) Manoff was accepted into the Actors Studio.

She is best known for her portrayal of "Marty Maraschino" in the 1978 film Grease (1978).

Has never done a nude scene or posed nude in her career.

Knocked two years off her age early in her career, and as a result has been mistakenly thought to have been the only teenage member of the Grease (1978) principal cast. She was in fact twenty-one at the time of filming.