Before the age of five, Tracy had a film credit to her name. The daughter of singer Ricky Nelson and Kristin Harmon, she appeared as one of Henry Fonda's daughters in the movie Yours, Mine and Ours (1968). In 1982, she became the popular Valley Girl "Jennifer DeNuccio" on the television series Square Pegs (1982) which ran from 1982-83. This show ...