DVD+R.....do any macs play?

[RAMd®d]

At least the newer ones will.

Early on, Macs used the -R format, same as the commercial movie discs.

At one point, Philips used the +R variant in their standalone recorders. This was a trivia questions posed by Philips public relations that allowed me to win one of their Streamium Internet radios.

What they use now, I don't know.