I forgot to list another one that's high on the list. John Coltrane with the Thelonius Monk Quartet, Live and Carnegie Hall. Too cool.

Also, since people have raised the quasi-live (studio with audience), I'm gonna add Eric Clapton's "Unplugged" performance. A few may pooh-pooh it because it's too commercial or got overplayed (a lot) on the radio, but it still is one of those albums that I think "Wow" whenever I put it on.

Thanks for the great responses, BTW. You've given me a lot to look at/listen to.

Peter