FILE - This Tuesday, Feb. 18, 2014, file photo, released by NBC shows host Jimmy Fallon during "The Tonight Show Starring Jimmy Fallon," in New York. Scores of people dressed in parkas and polar bear outfits gathered along Chicago's lakefront Sunday, March 2, 2014, hoping to catch a glimpse of comedian Fallon when he jumps into Lake Michigan. "The Tonight Show" host agreed to make Sunday morning's so-called "Polar Plunge" with Mayor Rahm Emanuel as a condition for the mayor appearing on Fallon's show in New York, following an exchange of tweets and challenges. (AP Photo/NBC, Lloyd Bishop, File)