I'd have to say mine are Bowie, Motorhead, Prince. Those are the big ones.
I've seen a bunch of the shows that folks regret missing. The Replacements at Echostage was terrible. Saw them the next night in Philly, which ended up being their last US show, and it was everything you could have wanted/hoped for. So I'm glad I had a true Replacements experience. I saw the Cranberries in 1993 as they were blowing up. They were opening for Suede (with Bernard Butler) and that was an outstanding show. Dolores was a charmer. Really just a great singer and performer. They were great. I also saw Supergrass a ton of times. Always wonderful. Joe Strummer at the 9:30 was fantastic. He did a bunch of Clash tunes...“Bankrobber,” “Tommy Gun,” “London Calling,” “White Man in Hammersmith Palais,” “Rock the Casbah,” "Brand New Cadillac" and "I Fought the Law". Very happy I got to see him.