Eric Clapton
Robert Cray
Los Lobos
David Byrne
Huey Lewis
Neville Brothers
Simon and Garfunkel
Tarika Sammy
Mahotella Queens
Brian Setzer Orchestra
Bonnie Raitt
Boz Scaggs
Leo Kottke
 
That's all I can think of right now. Plus, I used to see a lot of small-time local and regional bands when I lived in Minneapolis. Some of those guys were really good.

Kenny,
 
I turned down offers to audition for Hall & Oats and Uriah Heap (both in ~1978). Hall & Oats were kind of rising up and I couldn't stand them and Uriah Heap was trying to make a comeback of sorts.
 

Kenny's list reminded me of one I saw when I was very young: Herb Alpert and the Tijuana Brass.  I saw a lot of Classical stuff when I was young, but don't remember much of it now.

Waaaay back machine!
Boston
Nils Lofren
Kiss
Peter Frampton
J Geils Bank
Foghat
Rick Derringer
Lynrd Skynrd
Alice Cooper
Ted Nugent
Rolling Stones
John Cougar
Joe Ely
George Thorogood
The Who
Loverboy
Journey
Fleetwood Mac
Jefferson Starship
The Ramones
The Kinks
Foreigner
Doobie Bros.
ACDC
Sammy Hagar
Montrose
Blackfoot
REO Speedwagon
Nightranger
Styx
The Babys
John Waite (opened)
Dokken
Judas Priest
Scorpions
Van Halen
Motley Crue
David Lee Roth
Iron Maiden
Rainbow
Ozzy
Heart (opened)
Black Oak Arkansas (opened)
Cheap Trick (opened)
Blue Oyster Cult
Black Sabbath
ELO
Aerosmith
Neil Diamond
Diana Ross
Dire Straits
Prince
Bryan Adams
John Hiatt
Vince Gill
Collective Soul
Keith Urban
Glen Campbell
Hall and Oates
Pink Floyd (orig. Wall Tour)
The Police
The Eagles
Jackson Browne
Elton John
ZZ Top
Cyndi Lauper (opened in Tokyo)
Guns & Roses
 
 
I'm sure there are more.

Those I have a conscious memory of, there are some I also choose to forget.

Pink Floyd several times
Hawkwind with different line ups
Rick Wakeman
Phil Collins
Deep Purple
John Dankworth (Saw him for free as his drummer borrowed my drum kit)
Courtney Pine
Jean Michael Jarre (Docklands)
Thin Lizzy (Another free one as the band turned up without road crew myself and few others help lug the gear in)

bapu
Kenny,
 
I turned down offers to audition for Hall & Oats and Uriah Heap (both in ~1978). Hall & Oats were kind of rising up and I couldn't stand them and Uriah Heap was trying to make a comeback of sorts.
 

I knew T Bone , he bought one of my Pre CBS  Teles  back in the day ....
 

craigb
Kenny's list reminded me of one I saw when I was very young: Herb Alpert and the Tijuana Brass.  I saw a lot of Classical stuff when I was young, but don't remember much of it now.

It's true I have a lot of Jazz players in my list ...that's how I became celibate against my own will
 
Herb Alpert and the Tijuana Brass had a great guitar player.... John Pisano
 
I used to go out and hear John 2 or 3 nights a month when I lived in LA .
His Tuesday Guitar Nights would feature a Cream of the crop Jazz Guitarist playing along w John , a bassist + a drummer .
 
John is one of the best there ever was ..John Pisano's discography as a player is astounding .
He is still active as far as I know ...
 
all the best,
 
Kenny

jamesg1213

bapu
Kenny,
 
I turned down offers to audition for Hall & Oats and Uriah Heap (both in ~1978). Hall & Oats were kind of rising up and I couldn't stand them and Uriah Heap was trying to make a comeback of sorts.
 

Why did you turn down the Uriah Heep audition?

Combination of gun shy (hadn't played out in like 5 years) and not really "into" that band.

Oh, and for fun here's my list of musicians I saw, never want to see again, and want my money back from the first time:
 
Queensryche
Billy Idol 
The B52s
Hanoi Rocks
Interpol
 
 

My favorites are some of the times I've seen bands and wondered, "What are you doing here?"
 
 A long time ago, I was attending a company event at DisneyWorld during one of those special nights when the park is "only open to High School Students" (plus a certain number of creepy corporate types). I was one of the creepy corporate types. Anyway, I was making my way to some ride, turned a corner, and there was Wang Chung. They were playing Dance Hall Days. I had to stop and watch to see if everybody was going to Wang Chung tonight. (The band did, but they were the only ones.)
 
In the early 80's, Chicago used to host Chicagofest down on Navy Pier. It was fantastic. For about $10, you could buy a wristband to spend the entire day seeing as many bands as you could squeeze into your day. I was rather poor, but I scraped the cash together and saw Cheap Trick, Point Blank (no, no one else remembers them, either), Shooting Star, the Doobie Brothers (I was underwhelmed), and several more that I really can't remember. It was funny to walk around through the crowd and see these guys walking around with the normal folk, trying not to be noticed.
 
Going back a little further, I was wandering around at the 1974 World's Fair in Spokane, WA and saw Grand Funk Railroad performing on an outdoor stage. The band piled together in one small circle on the stage, almost on top of one another, leaving the rest of the stage completely bare. In retrospect, I think it was a way to compensate for inadequate monitors. Bachman-Turner Overdrive was a bigger hit and the small crowd seemed to know who they were. It was a little strange to walk through the park and accidentally come across one of these bands. The surprise made it that much more fun. 

more updates to my post #10.

You're all really old, aren't you. Most folks best times were 30 - 40 years ago!
 
But hey, I'm right there with ya'. There's no point in posting my list as it's similar to everyone else's. I loved the prog of course, but sprinkle in some Americana from The Boss, Buddy Guy, B.B., The Beach Boys and Santana. Season to taste with Canadians like Rush, Heart, Max Webster and Neil Young.
 
The Ones That Got Away:
Zepplin
The Stones
Jimmy Hendrix
Stevie Ray Vaughn - Biggest regret

Oh, and I just saw that the Jesus & Mary Chain are releasing their first album in 20-something years.
I saw them live at a festival.  Wasn't a fan until I saw their stage performance.  Now they're a favourite.

bapu

jamesg1213

bapu
Kenny,
 
I turned down offers to audition for Hall & Oats and Uriah Heap (both in ~1978). Hall & Oats were kind of rising up and I couldn't stand them and Uriah Heap was trying to make a comeback of sorts.
 

Why did you turn down the Uriah Heep audition?

Combination of gun shy (hadn't played out in like 5 years) and not really "into" that band.

Ed,
I'm glad James asked you why you made those decisions since I forgot to ask ...
I figured it may have been something to do with the small details / particulars along those lines
all the best,
 
Kenny
 

ampfixer
You're all really old, aren't you. Most folks best times were 30 - 40 years ago!
 

 
Yes, getting up there.  
 
Funny enough, I did most of my concert going between the ages of 25 to 35.  I grew up in very northern Minnesota about 3 1/2 hours from any large concert venues; so for my first 25 years I saw only one live concert.  Rush, Grace Under Pressure was my first ever, in the 80's.  
 

Since somebody asked...
From about 32 responses (addendums were added to the list but counted as part of original post) there were:
825 response entries comprising 589 Unique Bands or Persons.
 
Here are the Top40 (just because it fit within one screen):