Several Shirley Temple references here:
• The episode's main guest character, Vicki Valentine, was a child movie star who endeared audiences with her singing and dancing performances years ago. She's now a 60s-something adult who has remained active in her childhood profession.
• The Spaceship Lollipop (a prop in the recital) is a play on Temple's "The Good Ship Lollipop."
• The movie Lisa watches, about an African-American servant teaching a deeply saddened young girl how to tap dance, is similar to Temple's "Rebecca of Sunnybrook Farm".