Photo Gallery: Dick Clark: April 18, 2012 8/22

ADV. FOR WKD. EDS., NOV. 4-7--FILE--Teens dance during "American Bandstand" in Philadephia in this undated photo.  "American Bandstand" first aired as a local show in Philadelphia, gained popularity with host Dick Clark after he joined the program in 1956, and then went national in 1957.(AP Photo/File)