Further to comments about seeing great bands when they were somewhat unknown, I saw The Talking Heads at the Berklee Performance Center in Boston when their only well-known song was Psycho Killer (ca. 1976); the opening act was a band from Athens, GA called the B-52s. Great show. I also saw U2 at a rock club that seated about 400 just when they started getting alternative radio station airplay in the US and they were terrific as well.