Top five live Rock And Roll Albums

Waiting for Columbus   In terms of sound quality and performance this  
  the best Live R+R album ever made IMHO
Live at Leeds  (RT's Favorite band, "now they were art!")
Allmans live at the Fillmore East  The best Live documentary of Duane's 
  magical slide technique.
Live at the Roxy and Elsewhere (the best Zappa band IMHO)
At Folsum Prison (the sparks fly!)
Massey Hall 1971 
Rank  (  Morrissey and Marr would never reach these heights on their 
  own.)
RT Live at the Rockpalast.  (The greatest living songwriter at the height 
  of his career.)
Live Rust  (played very very loud, 105 db anyway.) 
Shadows and Light. What can you say about this band, Pat and Jaco!!
The High Road. (Someone finally recorded Roxy Music correctly, WOW)
David Live (The Thin White Duke strikes back!)

I skipped Lucinda's Live At The Fillmore album when it was released, but got it after seeing it on this thread. It's fantastic!

Since only I have mentioned the Alice in Chains acoustic live I believe some of you could have a missed masterpiece here. Not to talk about the superb sound quality. The BBA live - definition of 70’s hard rock - can still be ordered from Japan. YMHO.

Concert for Bangladesh
Dylan: Before the Flood
Allman Bros.: Fillmore East
Little Feat: Waiting for Columbus
The Band: The Last Waltz

Nice list @larryi. The Last Waltz is required listening (if only for the songs with Van Morrison and Muddy Waters), but anyone not wanting to have to hear Neil Diamond (he was there only because Robbie Robertson was at the time producing an album for him), Joni Mitchell (oy), Neil Young ('cause he's a Canadian? The Harvest album was his attempt at imitating The Band's brown album), or any of the other guests, Rock Of Ages is pure The Band. The Live At The Academy Of Music 1971 is an expanded boxset version of ROA.