okay, here is my chuck contribution -
i saw chuck about 2 years ago at a seated theater in Rome. The show started out kind of slow, in the sense that, every once in a while a few people near the front would jump out of their seats and start to dance at the stage, and some older ladies dressed in theater uniforms would rush over and scold them and make them sit down. then after a few songs, chuck played a really huge hit, and suddenly there was this big spontaneous crowd at the stage to dance ! nuthin violent or pushy, just right
if i remember correctly, Chuck's whole band was pretty young, including his son on guitar and his daughter singing backup.
As for Chuck himself, I was at the stage too and could look up and see his face very well - for a few moments I thought I could notice his "far-away eyes", but really, he was full of energy and he played great and really effortlessly. And once in a while he'd just throw in some bs tuneless riff somewhere, but he had this sort of happy devil who-gives-a-sh-t grin on his face as if to say, “hey - I did that on purpose, and it sounds great don’t it!”. But it DID sound great
Then of course for the last song they/he picked out all the cutie 20-year-old girls they saw and invited them all up on stage to shake it (gee, I wasn’t invited, oh well ;-)
So anyway, this was a couple years ago when he was 79 – I hope he hasn’t gone so downhill from then…I don’t know if I’d go see him again at this point, but I think if you’ve never seen him you might want to go for it, ‘cause you’ll probably feel sorry when it’s too late...!