Ray Bolger, Cary Grant, Marlene Dietrich, Noel Coward and
actor Michael Brooke
 

Cary and Noel Coward together isn't as odd. They were friends and Cary emulated Coward's style and class. And Cary did make a film with Marlene, but I have a hard time seeing the two of them in a social situation, however staged it may be.