I, like quite a few folks writing one-star reviews, have experienced the "Dead DVD" problem with this disk.  I've owned it for quite a few years, probably hadn't played it in at least 3 years, and when I popped it in my player the other night, nothing...nichts...nada.  It wouldn't recognize the disk.  And neither would 5 other DVD players I own.  Not sure how a DVD goes bad, as there are no scratches, marks, or any other apparent physical changes to the DVD, but yes, it no longer works.  Just as quite a few others have experienced.