Great list - mine in no particular order other than Springsteen.
Bruce Springsteen - Ames, Iowa - December 1980 Unbelievably good and impossibly long show. The greatest I have witnessed.
Santana - Paolo Soleri Amphitheatre, Santa Fe - October 1986 - It was mostly the original line up and the music was old 60s and 70s music.
BB King - several times and places - The King of the Blues
Eric Clapton - Paramount Theatre, Cedar Rapids, Iowa, September 1982 - Place holds 1800 people. I was first row balcony. EC played nothing but the blues. An intimate show for sure.
Little Feat - Hancher Auditorium, Iowa City, Iowa, October 1978, I was not familiar with them at the time, went with a friend and was completely amazed.
J Geils Band - Hancher Auditorium, October 1979, last rock show ever at Hancher due to the cost of cleaning the arm rests because people were standing up and dancing. Very high energy stuff.
Stevie Ray Vaughn with Jeff Beck, The Pit, Albuquerque, it is between he and Carlos Santana for best live guitar.