Benjamin lists several actors who have played Jekyll and Hyde in movies. He mentions Spencer Tracy, Michael Caine and Jack Palance. Christopher adds John Barrymore, whose 1920 silent version inspired many of the subsequent adaptations. Conspicuously absent from the list is Frederick March, who won the Academy Award for the role and is considered by many to be the consummate Jekyll/Hyde.
The tune Hyde whistles is called "Boys and Girls Come Out To Play."