Yes, I knew most of it (if not all of it) and yes, I'd seen plenty of the stuff before, but I still love this DVD. There are some fantastic clips of the early years of the band, and the individual biographies are fascinating and give you more of an insight into the members of the band.
Pete Townshend is hugely articulate and interesting, though his sense of humour has faded somewhat over the years. He and Keith used to clown around together on and off the stage, and that seemed to happen less and less after Keith died. Roger Daltrey is very open and candid and clearly loves/loved each member of the band dearly.
The way they both talked about Keith and John's deaths was very poignant. John's death is still pretty fresh and clearly pains them, but Keith died nearly 31 years ago, and yet you can still see that it affects Pete and Roger.
Being a Who completist, it's nice to have a copy of this DVD. But even if you're not a rabid fan but have an interest in the band, it's worth seeing as I think it will only increase your interest. If it makes you want to find out more about them, then go and buy the Deluxe Edition of the Live at Leeds album, and get the Isle of Wight Festival 1970 DVD. The editing and filming of that particular DVD isn't brilliant, but the lighting is generally great which makes it more enjoyable. As an aside: I'd like to see the whole of that concert released on DVD!
Go get this, sit down with a cuppa and some biscuits and wallow in nostalgia for a couple of hours. I know I did!