When they click (''Over the Rainbow,'' ''Let It Go''), they're timeless; when they clunk (''The World Is Not Enough''), they're also unforgettable -- for the wrong reasons; see what struck a chord or fell flat for us
Audrey Hepburn, ''Moon River''
Why it struck a chord: Hepburn strummed and sang a simple rendition for the 1961 film, but crooner Andy Williams made ''Moon River'' iconic. Whether plucked on a guitar or fully orchestrated, the promise of ''two drifters... off to see the world'' continues to resonate more than 50 years later.
Image Credit: Everett Collection