My normal DVD player is region 1. On my cmputer, it's weird and cool the way it can be set up.
Since I have a mac running both os 9 and 10, I can set the DVD drive on os 9 to be region 1 and still watch most DVDs. I have it set on region 3 on os 10 so I can watch Uzumaki!
I can only switch the region setting of the DVD drive 4 times total also.. it's like after you change the region setting for the 4th time, that's the region you're stuck with for good. (But in the other OS, it's compltely separate!)