Somehow this turned into a Fogey Concert Thread!
I saw Whitesnake once, opening for Motley Crue in 1987. I was not impressed. I thought the lineup was poser-city. I mean hard to call Aldridge a poser, but I was big fans of Sykes/Murray/Dunbar and I thought '87 touring lineup (and all future WS lineups)was a complete farce. Didn't bother hitting their headline show a few months later.
Faster Pussycat was the worst band I've ever seen live. I saw them in a small club in 9/87 in Providence, and they single handedly caused me to consider skipping the GnR show there a month later. I also went to the Alice Cooper/Freheley's Comet/FP show at the Garden in 87, and Ace was sick which meant more time for FP. They were so lost on an arena stage.
Saw Cozy Powell twice live. Once with ELPowell in '86. WE met him after the show. He let us take his pic and he signed my ticket. Someday I'll scan those in. Also saw him (and Neil Murray) in Brian May's band when they opened for GnR at the Garden in '93.
..and speaking of Dokken, saw them a few times, but saw them open for Priest in '86. During JP's set, look who's standing next to us??