Here's a great scene from season 6, episode 6 of The George Burns and Gracie Allen Show (Oct 3, 1955). In this episode, George is trying to find backers for a musical version of his book, ""I Love Her, That's Why"". Everything looks all set till the investors find out George wants to play the lead role.

Here, George and Gracie sing a song based on the book's title, in a delightful duet with some charming dancing thrown in. This is a historically significant scene, as it's the last musical number George and Gracie ever performed on film together.