I was fortunate enough to see the second performance at Glyndebourne last year. I will never forget the performance, nor the date: 7th July 2005 ... the day of the London Bombings.
Aside from my personal feelings about the outrage, there were two consequences for the performance. Firstly, at least 10% of the seats were empty - something almost unheard of - because so many of those coming down from London were unable to travel. Secondly, in response, everybody involved gave more than 100%, to put on an astonishing performance.
I have recently bought 5 copies of the DVD All but one will be given to friends and relations around the world. But I have already played my own copy several times.
I can only agree with the two rave reviews already written. But these were really about the live performances they saw rather than the DVDs. These are filmed at HD quality, over - I think - the last two performances. And it was clear to me that the production had developed beyond what I saw.
Also there is a large amount of additional features included.
These range from a very helpful visual synopsis of the plot, and a number of photos, to a couple of enthralling interviews. The first is with Danielle de Niese - the young American singer playing Cleopatra, who deservedly stole the show - and her substantial and highly entertaining account of the Glyndebourne experience and what it meant for her. The second, longer and, for the opera lover, even more fascinating, is a discussion with the major participants, including Conductor William Christie and Stage Director David McVicar.
I do not believe that a better opera DVD at present exists.