On the other hand, Spock's Beard released a two-fer DVD set ("The Making Of 'V'" and "Don't Try This At Home"), which included a bonus CD of live material and session work from their "Snow" album. One could also get this CD when ordering the "special edition" version of "Snow", but what fun...
Don't know if I could list 40, but:
All the King Crimson videos that aren't "deja VROOOM"
Todd Rundgren's "Live In Japan" and "Live In Cyberia"
Live Aid
Knebworth '90
The Return Of Spinal Tap (without concert performances overlapping with interview material)
Don't forget to try King Crimson's "deja VROOOM", one of the best music DVDs out there.
Personally, I'd like to see more Crimson material, as well as more Todd Rundgren stuff, including the "Live In Japan" video.
Also, more Joe Jackson, Negativland, Frank Zappa (ESPECIALLY) and Radiohead...