I've probably been to way too many shows through the years, and my hearing suffers from it. Some of the best I've seen:
The Boss, 1977. 5th Row, The Milwaukee Arena. Right after "Darkness on the Edge of Town" came out. I was 16, and that was a real eye opener.
The Boss. Just him and an acoustic guitar, "The Ghost of Tom Joad" tour. The emotion in some of the songs brought tears to my eyes.
The Blasters. Under the I-794 bridge at Summerfest in Milwaukee probably around '83 or '84. The Alvin brothers blew everyone away on a rainy, windy night on the shores of Lake Michigan. "Marie, Marie". They rocked like you wouldn't believe.
Steve Earle. Late '80's. Same bridge, same kind of weather. Great story teller.
Joe Ely. Mid '90's. Taste of Chicago. A blustery, humid night in the Windy City. I think he had four guys playing guitar. "Settle for Love". Incredible.
Roy Orbison. 1982. Somewhere in Baltimore. Coolest display of vocals I've ever seen. My friend and I got to talk to him before the show, which made it even better. My friend tried to trade Ray Ban sunglasses with him, but he politely laughed and declined.
Charlie Feathers from the Sun Record glory days on that same trip in Washington, DC.
I like to think of these as shows, (except the first Springsteen), rather than concerts. I've never been too crazy for huge venues.
I have many more that made an impact on me; Bob Dylan, Mink Deville, Dire Straits, Joe Jackson, Warren Zevon, Dwight Yoakam, Tull, Syl Sylvain, Fats Domino, Jerry Lee Lewis, Los Lobos, The Cars, The Knack, and on and on and on.
Also dozens of lesser known singer/songwriter/story tellers from Texas, Tennessee, and everywhere else that my friend used to book at his restaurant/club. It was a sad day when it closed.