McKechnie landed a handful of other stage parts before appearing on NBC’s “Hullabaloo” as a dancer. She appeared on the soap opera “Dark Shadows” as Amanda Harris and Olivia Corey from 1969 until 1970. She returned to Broadway soon after, earning a 1976 Tony Award for Best Actress in a Musical for “A Chorus Line”. She also won the Theatre World Special Award and the Drama Desk Award for Outstanding Actress in a Musical for the part. During the ’80s, she appeared in “Annie Get Your Gun”, “Can-Can”, and “Sweet Charity”, among others, and began choreographing for The Los Angeles Raiderettes after a diagnosis of arthritis. McKechnie continued to act despite her health concerns, appearing Off-Broadway in “Annie Warbucks, “You Never Know”, “Cut the Ribbons”, and “Showtune”.