This Day in History: It's a Wonderful Life Debuts 291 Anderson Evans 12/21/09 09:30AM Filed to: Videohistory Videohistory It's a Wonderful Life Jimmy Stewart Vintage Retro Video Movies TV December 21, 1946 It's A Wonderful Life Premieres, and Jimmy Stewart and Christmas become synonymous.The ending as it was: [via YouTube]The ending as it should have been according to SNL '86: [via NBC]