Smile is a song by Uncle Kracker from his 2009 album Happy Hour. It has peaked at #47 on the Billboard Hot 100 as of September 26, 2009.
Uncle Kracker (From Real Detroit Weekly): "It's just the feel-good song of the year. It's so positive, and I hate that word, but I've probably used it eight times today talking about that song." (Source Smile Songfacts).