is this the greatest live band of all time?

Steppenwolf-1970. John Kay with a black leather, one piece jumpsuit with Saturn embroidered on the front... and mirror shades. Goldly McJohn on Hammond B3, sporting this giant beard and huge red (?) Afro. Pretty amazing. I loved 3 Dog Night about that same time. Their live album was and is pretty darn good. 

The Zombies.

Reading all in this thread and it brings back memories of so many great concerts.  I have seen nearly all of those mentioned, above.  What is really cool is for those mentioned with specific dates.  Hey, I was at that. Hey, I was at that one, too.  I think The Who is probably the most stand-out concert memories for me.  The one at Anaheim Stadium, Summer of 1970, was a revelation.  Then again, in December of 1971 at the Long Beach Arena doing their North American Tour of "Who's Next".  But really, this list just goes on and on.  I don't recall reading above that anyone mentioned Alice Cooper.  I saw them play 3 times.  Same is true for The Tubes.  Really wonderful experiences that I will never forget.  I still play the albums from all of these bands.  Awesome music!

@twoleftears , I saw the Zombies in 2017 at their N. American tour commemorating the 50th anniversary of Odessey and Oracle.  Colin Blunstone, Rod Argent, Chris White and Hugh Grundy were there and they sounded great - an awesome evening!

Would have loved to have seen J. Geils. Sammy Hagar is one of my favorites.

Local band that I used to catch all of the time were the Pub Sigs & The Why Store.