I hope this is the correct forum to post this question, but I was wondering if there was a way to determine that a DVD is "bad." For example, I recently bought all of the Evil Dead movies online. I was watching the first one (the one presented in 1.85:1 w/ dts encoding) and the DVD bombed out at about the 1 hour 10 minute mark. As the DVD was new, I assumed that my DVD player (Sony DVP-NS315)might be having trouble reading the disk. So, I threw the disk into the PlayStation 2, which had problems in the same spot. When I took the disk out to look for any scratches, the back looked unblemished, but there was no fine demarcation between data and "blank" space. In fact, there was a wavy line that almost looks like water damage. I'm pretty resigned to the fact that this disk is bad. But, Evil Dead 2, and to a certain extent the Army of Darkness - Boomstick Edition, look similar. I haven't gotten around to checking those movies yet, but I'm afraid they are bad too. So, I'm asking for any sure-fire way to determine whether a disk is bad or not. For all I know, these DVD's can be read on better DVD players, and the latter two movies may work fine on my player. Is there a bad batch of Evil Dead DVD's? Anybody else had this problem? Thanks in advance.