These Classic Rock Bands Know How To Jam

Some Rock bands have the art of jamming on stage, down pat.
They really "bring it" when they perform live, and that's what it's all about, right?

I have come up with my five favorite Rock bands (in no particular order) who know how to put on a show.
That means experiment, improvise and wing it from time to time, while giving their audience an incredible experience.
Who are your favorites?