Puttin' on the Ritz

The song Puttin' on the Ritz, was featured in movies like Blue Skies, Communion, Dirty Rotten Scoundrels and Idiot's Delight. What Movie makes the best use of Puttin' on the Ritz in it's soundtrack?

Puttin' on the Ritz was featured in the following movies:

Blue Skies

Communion

Dirty Rotten Scoundrels

Idiot's Delight

Molly: An American Girl on the Home Front

The American Film Institute Salute to Fred Astaire

The Golden Child

Young Frankenstein