"That Girl," which catapulted Marlo Thomas to stardom, ran on ABC-TV from 1966 to 1971. A top-rated sitcom throughout its entire run, it told the story of aspiring actress Ann Marie, who moves to New York and works at a series of jobs while waiting for her big break in show business. Although she is focused on her career, Ann finds time to fall for magazine executive Donald Hollinger, played by Ted Bessell. "That Girl" featured a wonderful lineup of guest stars, including Dabney Coleman, Rob Reiner, Richard Dreyfuss, Carroll O'Connor, Teri Garr, Ethel Merman, Rob Reiner, Bill Bixby, Dick Shawn, Garry Marshall, Sid Caesar, Danny Thomas, McLean Stevenson, Monty Hall, Jack Cassidy, Carl Reiner, Pat Boone, Cloris Leachman, Kenneth Mars, and Regis Philbin. In the 1960s, it was groundbreaking for a series to feature a single woman in the working world. Marlo Thomas and "That Girl" helped pave the way for future TV shows like, "The Mary Tyler Moore Show," "Murphy Brown," "Ally McBeal," and "New Girl." "That Girl" was developed by writers Bill Persky and Sam Denoff, who had served as writers on, among others, "The Dick Van Dyke Show."
Finding out that Broadway producer Harold J. Davis is seeking a fresh-faced unknown for his next play, Ann goes out of her way to get recognized by him, and even goes so far as to get Donald to put the good word in for her.