If I remember correctly it was billed as the farewell tour. I saw them in Chicago in 1977.
http://members.tripod.com/~LZTorak/lz/chronology.html
One other concert of note. I saw Lynyrd Skynyrd open for The Who in 1974(?)
No, the guy you’re interested in is simply Beck. Jeff Beck is a guitarist, not a singer. He replaced Eric Clapton in the Yardbirds, and later formed his own band with Rod Stewart as the singer. (This was back in the '60s.) The Jeff Beck Group’s first album, Truth, was blatantly imitated by yet another former Yardbirds guitarist, Jimmy Page, when he formed his own group: Led Zeppelin.
I saw the Bealtes in 1966 (J.F.K. Stadium, Philadelphia). I still have my ticket – it cost $5. 
I saw the Lamb Lies Down Genesis tour in November 74 - Gabriel’s last tour with them.
It was stunning, with loads of costume changes, slide & light shows and general weirdness. I didn’t go the next time they toured but friends said it was pretty good even without Gabriel…
Two days after seeing Genesis, I saw Jethro Tull at the same venue - that was pretty good, too, but Ian Anderson standing on one leg playing a flute isn’t really the same experience as seeing Gabriel as the Slipperman! But I was in the front row.
I saw Phil Collins a couple more times but that was with his band Brand X and I really went to see the support - Peter Hammill.
The only other one on your list that I’ve seen is Dr. John - excellent shows.
The Beck you’re talking about is Beck Hansen, though he does not use his last name. Jeff Beck is a guitar player. Actually Jeff Beck called one of his albums Who Else? to allude to this confusion.
I don’t know, man. I saw that tour in Pittsburgh. Third row. And I was turned off by the whole “Phil Collins with supporting band” thing. I never thought he was that great a musician or singer (but Lisa wanted to go, and whatever Lisa wanted, she got back then).
But Chester ruled!!
The DVD is called Live at Wembley Staduim and is available on Amazon or Netflix. Paul Young was the guy who had hits with “Come Back and Stay” and “Every Time You Go Away” back in the mid-80’s. He was only the opening act and does not appear on the DVD. (You might be confusing him with the other Paul Young, who was the lead singer of Mike+the Mechanics, and unfortunately died a few years ago.)
The Video Show is just all their music videos from 1976 to 1999. Unfortunately, none of their concerts before 1987 are available on DVD and are looong out of print on VHS. For those, your best bet would be to check a friendly neighborhood file-sharing service near you. I don’t know of any plans to release earlier concerts on DVD and frankly I’m not holding my breath…
Of your list, I’ve seen Jimmy Buffett, Dr. John, and Santana. I’ve also seen, in no particular order (and to the best of my memory, 
):
Humble Pie (w/ Peter Frampton)
Peter Frampton
Bob Seger
Stevie Nicks
Elton John
ZZ Top
America
Allman Brothers
Lynyrd Skynyrd (before and after the plane crash)
Styx
Doobie Brothers
Black Sabbath
Van Halen
And plenty more that I can’t remember. It was the 70’s, ya know!
I, apparently, saw Joe Cocker. But being three or so at the time, have no memory of this, so I couldn’t tell you if he was any good or not. I do remember seeing the Boston Pops the next year, and not appriciating them at all. Except for the fireworks (it was outdoors, obviously).
Oh yeah, you’re gonna have a hard time looking up “The Band” and actually coming up with “The Band.” I should’ve linked before, this is one of my favorites. Listen to “Long Distance Operator” for some serious funkiness! One you’ll probably recognize is “The Weight” (#5). Lonesome Suzy (both tracks) is another good one.
I’d be happy to make you a couple of CDs free of charge - don’t worry, it won’t break me. And I can sure think of a few more Paul Simon songs you should have.
I’ve seen Buffet twice. It’s a lot of fun.
Some other concerts that stick out for me are Queen, Styx, Elton John and Fleetwood Mac.
Actually camping out for Fleetwood tickets is the event of my HS years that I should turn into a novel or a screenplay. (or both) That was one crazy night. Kind of my own personal American Graffitti.
I saw Nirvana in ‘91. They sucked. Wandered on to a Shonen Knife track, shuffled a bit, Kurt mumbled into the mic, they played a 55 minute set {I timed it} with none of the songs anyone wanted to hear {and yes, I was listening to Bleach before they got popular}, Kurt mumbled into the mic again, and they wandered off. No encores, and a very unhappy crowd: I’ve been to far better gigs at the local "5 bands for 5 bucks’ punk club.
On the other hand, Jane’s Addiction, around the same time, were gods: they played at the town hall, this great old Edwardian edifice with gilded balconies and velvet drapes, and the place was packed and sweating - they played for 2 hours, every song you wanted to hear, and they rocked: Perry Farrell was strutting like a peacock, Dave Navarro was playing some of the best guitar I’ve ever heard, the balconies were bouncing up and down 18 inches with people leaping frantically, and the place just reeked of sweat, marijuana and pheromones - it was what I imagine seeing The Who or Led Zep in their prime was like. If you couldn’t get laid that night, you couldn’t get laid. Best gig ever.