I don't know who to blame, Warner Brothers for making a dud DVD, or Amazon for selling me what was obviously a returned DVD. There was a hand-written serial number at the top of the cardboard cover, and the plastic wrap covering it was very shoddy.The DVD itself was dirty, but I cleaned it and played it to see if that was the extent of the damage. It wasn't. The sound goes in and out--with long periods of silence--during the 1979 interviews with surviving cast members Margaret Hamilton, Ray Bolger, and Jack Haley. The rest of the behind-the-scenes extras seems to have been spared. I haven't watched the movie itself yet, so I'm hopeful that at least the movie is intact. If not, I'll return the DVD and wait for the October release of the Oz DVD package.The film is a classic, beloved by million and millions. Not even a dud DVD can tarnish this gem of a movie.