I've never been a fan of Zeppelin's live stuff. They just don't sound right to me, especially Paige. Then again, Paige is not a very good guitarist. I think he's the most over-rated lead man EVER.
However, I will probably pick up the DVD anyway, the for the "collector" value. Maybe it'll have the shark footage, just to put the rumour to rest.
Oblivion, you don't like III? I personally think it's their best album. It has the slow, acoustic numbers that everyone loves, and it has the ballsy tunes, especially "Out On the Tiles." It has everything Zeppelin, and it's fucking great. I also think that II may be the best bass album of all-time. Jones is simply on another level on that album.