Folk Music in "The Hangover"

I recently heard some traditional folk music in a most unexpected place -- the recent movie "The Hangover." At one point in the movie, although the words had been twisted and the tune had a definite "rap" sound, I could distinctively hear "What'll I do with the Baby-o?"

Have you heard any folk music in unexpected places?

The Memphis Dulcimer Gathering & Folk Festival will be held on September 25 & 26, 2009 at Second Baptist Church in Memphis, TN. For information and details, please visit the EVENTS page at http://www.leecagledulcimers.com/.