The Man in the Santa Claus Suit is a 1979 madefor television Christmas film directed by Corey Allen, and starring Fred Astaire in his final television appearance.
Bob Willis Burghoff is a math teacher who is madly in love with a young fashion model and prominent figure in the disco scene, Polly Primer Buckman. Polly, however, is already engaged to marry wealthy and handsome Rod Sanborn Greenan. He hopes to impress her by showing up in a santa suit, but withdraws when he learns of Rods marriage proposal to her. Polly is not sure to marry Rod and hints to Bob that she longs for being swept away by another guy, but Bob is too shy to act on it. Realizing he would lose her forever to Rod, he interrupts her at a fashion show and tells her he loves her. Polly then reveals having fallen in love with him ever since he first spoke about math, and she accepts his marriage proposal.Stan Summerville was once a promising chef cook, but is now a homeless crook who owes money to criminals Babyskin Barth and Bruno Betinger Feinberg. Stan buys a santa claus suit in order to hide from them, and while his friend Eddie Vitte distracts the criminals, he breaks into a wealthy residence to rob the people who live there. Residents are Dora Fabray and Dickie Dayton Gould, a once poor couple who became millionaires after striking oil. They love performing and disapprove of their bratty grandchildren Melissa Lytton and Lance Petersen, remembering the days that they did hard labor to earn money. Because of once being poor, they sympathize with Stan despite him holding them at gunpoint and they decide to nurse him back to health after their butler Chandler Wells hits Stan unconscious. While Stan restores his faith in humankind due to the hospitality of the Daytons, Babyskin and Bruno track him to the mansion. Ultimately, Melissa and Lance save the day by attacking the criminals, and the police reward Stan with 25,000 for capturing the wanted criminals. ........
Source: Wikipedia