I'm interested in buying a DVD of a British documentary. However, it's only available in PAL format.
I have an iMac running OS-X 10.5.8. I bought my iMac in the States.
Is PAL compatible with my iMac?
I've found this thread on the Apple forums.
The gist appears to be that it will play, but you'll have to change the region of the DVD drive (unless it's a region free DVD) and you've only got 5 changes before the drive locks to the last region selected.
Can't really tell, but I can say that I never had any problems playing the couple of NTSC DVD's I have on any hardware, including a 1999 laptop, a 2009 laptop and 2 DVD players, all of which were targeted at the German market (PAL).
Region codes could be a problem, though, unless the DVD is region-code free or you have appropriate... tools. ;-)
I am thinking you can probably use HandBrake to make a copy of the contents of the PAL DVD and watch it from hard disk.
Otherwise ChrisF's answer is correct.