ZZ Top June 10, 2012

ZZ Top aka "That Little Ol' Band From Texas," lays undisputed claim to being the longest running major rock band with original personnel intact, and in 2004 the Texas trio was inducted into the Rock and Roll Hall of Fame. Of course, there are only three of them - Billy F Gibbons, Dusty Hill and Frank Beard - but it's still a remarkable achievement that they're still very much together after almost 40 years of rock, blues, and boogie on the road and in the studio. Their many hits include 'Sharp Dressed Man,' 'La Grange' and 'Legs.'