hmm, I've been to lots of concerts. A few of my favorites:
Jerry Garcia Band-1992 at The Warfield in San Francisco
Grateful Dead, June of 1990. Deer Creek Amp, Noblesville IN
Grateful Dead, May of 1993. Sam Boyd Silver Bowl, Las Vegas, NV. Sting opened for the Dead & "Every Little Thing She Does is Magic" was perfect!
Countless other Dead shows
A bunch of Widespread Panic shows.
Neil Young-summer 2001 at Riverbend in Cincinnati, OH
Steely Dan-summer 2001 at Riverbend in Cincinnati, OH
Elton John-1999 at Riverfront Stadium in Cincinnati. Just him & his piano. Amazing.
Bob Dylan-1995 (I think) at RFK in D.C., opening for the Dead. Coincidentally, one of the worst concerts I've seen was Bob Dylan in 1989 at UK (U of Kentucky).