Full-screen Video Interruptions

Kim and I have been downloading the TV show "Heroes" in iTunes and watching it on our TV.  This is on my Mac Mini system, using Apple’s DVI to video adapter to display the video on the TV, which works quite nicely.

But today, right in the middle of watching one of the episodes in full-screen, iTunes decided to pop-up a dialog box saying "Thanks for using iTunes.  Would you like to back up your collection?"

Frankly, if I wanted this kind of brain-dead and annoying behavior while watching a video, I’d use Windows or Linux to watch it, where the overall experience is nowhere near as seamless and polished. I expect that kind of thing on those operating systems; I expect more from Mac OS X.

On every operating system, there should be a flag that any application can set, which would tell the operating system "I’m in full-screen do-not-disturb mode", the effect of which would be to prevent anything from popping up in front of the application.  I’m surprised that OS X does not have such a mechanism, especially in the tightly-integrated environment of iTunes/QuickTime, where all the running code should know that there’s a video playing.