"Smile" - Charlie Chaplin, Nat King Cole

Smile is a song based on an instrumental theme used in the soundtrack for the 1936 Charlie Chaplin movie Modern Times. Chaplin composed the music, while John Turner and Geoffrey Parsons added the lyrics and title in 1954.

Smile has become a popular standard since its original use in Chaplin's film. Originally sung by Nat King Cole in 1954, the song has been covered by many people, including Cole's daughter, Natalie, Petula Clark and Michael Jackson.

A day without a laugh is a wasted day.
                              ~Charles Chaplin

Here the Nat King Cole version is married to clips of Charlie Chaplin... smiling.