What actor/actress was in these movies?

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Niven is the only one I know.
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You can't make a rainbow without a little rain.
Here's a shot from one more film with the actor/actress in question:


I'm pretty sure this picture is Fred Astaire in the movie The Band Wagon.
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OPEN FLOOR.



Deep in My Heart + Oklahoma! + The Toast of New Orleans + The Prodigal + The Band Wagon =
James Mitchell




OPEN FLOR
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"Film is a disease. When it infects your bloodstream it takes over as the number one hormone. It bosses the enzymes, directs the pineal gland, plays Iago to your psyche. As with heroin, the antidote to Film is more Film." - Frank Capra