There was a display of his horror memorabilia that came through Toronto. A friend went to opening night and met KH there. The exhibition would be interesting, but in all honesty I would be a bit meh on meeting KH. He plays well but nothing he has done has had any real impact on me. I might be tempted to say something like "Oh, you're KH? I didn't recognize you without a wah under your foot." But more likely, I would just want to talk old 50s and 60s horror movies, not music.
But I am not normal. I don't get star stuck by musicians. The only ones I have been really impressed at meeting are Jordan Rudess (Dream Theater - that guy really is hugely talented and probably a musical genius) and Geddy Lee (Big Dirty Band, and I hear he has played with a couple of other guys and put out some records with them). On the other hand, I would probably be really excited to meet Britney Spears or Katy Perry, but not for musical reasons.