The pinchable cheeks made cuddles famous. He made so many musical films, that it almost seems like he was in every film in the 1940's at times. His most prominant roles were Yankee Doodle Dandy, Romance on the High Seas, and Casablanca.

Film Essentials:

That Night in Rio
Ball of Fire
Yankee Doodle Dandy
The Human Comedy
Romance on the High Seas
In the Good Old Summertime