Tonight is a blue moon - the second full moon in a calendar month. The last time a blue moon fell on New Year's Eve was December 31,1990. (Alas, it might prove difficult since the skies might be cloudy.) The next time will be in 2028. So tonight, when you drunkenly serenade your sweetheart with the 1934-penned classic, she'll think you're clever. (Amy Crocker)