Cool story (I think): Iron Maiden, New Haven Coliseum, some time in '83, Coney Hatch (SUCKED) and Fastway (AMAZING) as the opening bands. I'm with my friend, and we have front row on the side, so we're kind of looking down from stage left on the band (I can also see the backstage area).
Maiden had a desk on the side of the stage; In between CH and Fastway, Bruce came out and was talking with the guy at that desk (it was kind of a mixing board, but not the main one that was back on the floor). He was cool; shorts, and black leather jacket. I yelled down to him and he was very nice; waved and said "hey mate!". Later, Maiden takes the stage to "Where Eagles Dare", and the band is playing and he goes out for his cue, and his mike is not working. He looks over, yells something, but starts singing it anyway, and I swear, you could hear him ACOUSTICALLY over the band playing at full volume. A friend said it was probably my brain putting the vocals in where they belong, but I swear I heard him singing. After the first verse, he came back over, and he's on the roadie at the desk in front of us, yelling (it sounded a lot like "Mission from 'arry", if you're familiar) and he goes back for the second verse, and after the first line or so, the mike kicks on and you can hear him (it took a couple words to realize he was miked, so it sounded like he was screaming) but it was still very cool. Bruce has pretty much been my favorite front man from that point on.