Haven't heard that many but my favorite so far has got to be Alice In Chains Unplugged. Not only is it a reference quality recording, but it just has a great atmosphere and mood. They are excellent musicians and songwriters.
Built to Spill - Live
Neil Young - Live at Massey Hall 1971
Bob Dylan's 30th Anniversary Concert
DJ Shadow - In Tune and On Time
Woodstock: Three Days of Peace and Music
The Quintet - Jazz at Massey Hall