Various shows stick in my mind, although the details are usually shard with foggy bookends...
Gang of 4 - tour after first LP 'Entertainment', very intense and politically edgy.
Ultravox - supporting 'Vienna', a real European music (or so I thought back then)
Gary Numan - the tour after 'Cars' was all over the radio. It was his b/day and invited the audience to the hotel. Didn't mingle long there but I did get to ask him about his flying and his new hair transplant (the latter of which caused him to stalk away)...
Minor Threat, Killing Joke, Steel Pulse - so much energy and fun!
X, Echo and the Bunnymen, Black Flag - early 80s in a small Houston club
David Bowie - 1st rock concert for me (The Low tour captured on 'Stages' LP)
Philip Glass (1976) - 1st concert really, in a private school auditorium. Amazing, had to beg my father to stay during intermission (I was 14 yrs old).
King Crimson around 1981. Fripp was G-O-D to me then...
Virgin Prunes, KUKL (Bjork's 1st band), Nick Cave - London 1984... wow!
Iggy Pop w/ Janes Addiction (some crummy rock-disco, late 80s) - had VIP area pass, bumped into umm... groupie on her knees "adoring" the lead guitarist!
All in all, some great evenings!