I guess I could try a new disk - at least it would only be $20 (or less if used).
You might still be able to rent KOTOR from a rental outlet.
Well, at the rate that I play games, I would be paying a lot
of late fees, or I would just wind up paying for the game after I found out it worked (assuming it worked). Anyway, I picked up a used copy for $10 today and played for about an hour and a quarter. There were a couple of minor stutters, but just during some of the in-game cinemas and not during battle, so hopefully I did just have a bad disc. I guess I will find out as I keep playing.