May Birthday Boy with Million Dollar Legs

As a child, this legendary tap dancer/actor and his sister Adele studied ballet, ballroom, toe dancing and tap. In 1905, they made their vaudeville debut as a miniature bride and groom, and began touring in an act called "Juvenile Artists Presenting an Electric Musical Toe-Dancing Novelty." Adele sparked but her brother was an awkward youngster and the act fell apart. They returned to the stage 2 years later; Adele retired in 1932, but her brother went on to Hollywood where he found his own style and successfully appeared in many movies with several famous dance partners. The evaluation of his first screen test was: "Can't act. Can't sing. Balding. Can dance a little." He used his ballet and ballroom training in his tap choreography and was considered by other tap dancers as poised, charming, nonchalant, graceful, elegant and a "man of class." He was one of the first Kennedy Center Honorees in 1978 and was inducted into the International Tap Dance Hall of Fame in 2002.

QUESTION: Who was this legendary tapper whose legs were insured for one million dollars?