Gary Moore - Blues Alive
INXS - LIVE!
George Thorogood and the Destroyers - Live
Something Corporate - Live at the Ventura Theater
Mariah Carey - MTV Unplugged
Bryan Adams - MTV Unplugged

I haven't heard Mirrorball by Def Leppard but I can only assume it's good, because they are brilliant live. Also, I'll admit I haven't heard/seen the whole of Live at the Ventura Theater but the songs I have heard from it are immense, so I'm going by assumption that the album itself is also fantastic. I should probably hunt that album down and have a listen and/or viewing (it's a video album).

EDIT: Peter Gabriel, Phil Collins and Bruce Springsteen all spring to mind from my Mum's old video tapes, too.