“C’mon baby, let’s do The Twist.” So sang Chubby Checker on “American Bandstand” on this day in 1960, in a TV appearance that helped launch the song to #1. In an unprecedented twist, the song returned to the #1 spot again 16 months later in January 1962. Just 19 for his “Bandstand” appearance, Mr. Checker (born Ernest Evans) is now 78.