Will just list my favorites by genre
George Strait - all that man did was sing for 2 straight hours. Dixie Chicks were with him(prior to them sticking their feet in their mouths).
Eric Clapton
Motley Crue
Drivin N Cryin

Shook hands with Faith Hill from stage before she became super famous.
Had a drink with Tone Loc at a club in Grand Forks, ND and then hung out in airport the next morning.

My Dad saw Elvis in his high school auditorium in 1955. He only played 30 minutes before the school's Principal shut him down for "gyrating too much"......my how times have changed.
Pretty interesting article about the show and Elvis's early years
http://www.mobilebaymag.com/Mobile-Bay/July-2011/ELVIS-The-Early-Years/