Born in Brooklyn, New York, Heller relocated with her parents to West Hempstead, Long Island at the age of two. Her career began on the New York stage in the early 1970s, where she was a staple in musicals like "Godspell" and "Grease," playing the brassy Rizzo in the latter. In 1978, she relocated to California and began landing roles on television and in the occasional feature. Her first significant part was as comedian Freddie Prinze's kindly secretary, Carol, in the TV biopic "Can You Hear the Laughter?" (CBS, 1979). But it was her turn as a hapless, near-suicidal lesbian on the controversial sitcom "Soap" generated more attention, though mostly negative due to the character's stereotypical behavior. The unfortunate publicity appeared to have little impact on Heller's career, as she went on to log numerous guest appearances on television in the years that followed, most notably as a series regular on the short-lived sitcom "Mama Malone" (CBS, 1984). That same year, Heller landed her first hit movie with "The Karate Kid" (1984), which cast her as Ralph Macchio's loving and hardworking mother. Heller would not reprise the role in the film's sequel, "The Karate Kid, Part II" (1986), but did return in a minor capacity for the franchise's third picture, "The Karate Kid, Part III" (1989). Between entries in the series, Heller maintained her steady diet of television appearances, including several stints as a series regular on shows like "Better Days" (CBS, 1986) as a tough English teacher at an inner city school, and the comedy-fantasy "Second Chance" (Fox, 1987), which featured a young Matthew Perry in its cast. Heller worked steadily on the small screen throughout the late 1980s and into the 1990s with occasional forays into features, including a minor role in Warren Beatty's acclaimed political satire, "Bulworth" (1998). In 2000, she earned her most unusual credit to date as Barbra Streisand's mother in autobiographical video segments that screened as part of the singer's "Timeless" concert tour. For the next decade, she appeared regularly on TV and in features until receiving what could only be described as the second act of her career on "Mad Men."Buried under layers of old age makeup, Heller stole countless scenes as the doddering, seemingly senile secretary Miss Blankenship, who is foisted upon Jon Hamm's Don Draper as punishment for his dalliance with previous assistants. Salty-tongued, humorless and oblivious to basic office politics, Blankenship made her tenure with Draper miserable by failing to announce visitors on time, chastising him for napping in his office and revealing personal details about his day, including visits to the bathroom, to all within earshot. Viewers quickly fell in love with Miss Blankenship, and a Facebook page devoted to her activities lit up with glee after an episode revealed that in her youth, Blankenship was the female equivalent of Draper and earned the nickname "Queen of Perversions." But all good things come to an end, as critics and audiences alike were saddened to see Miss Blankenship quietly expire at her desk in the 2010 episode "The Beautiful Girls." For her indelible performance on the series, Heller received an Emmy nomination for Outstanding Guest Actress in a Drama Series in 2011. Meanwhile, she made more age appropriate guest appearances on other hit shows like "Grey's Anatomy" (ABC, 2005-) and "In Plain Sight" (USA, 2008-12).