Q: Toggle on/off Notifications system wide

Seeing as how there is no iOS community (don't see it anyway), I'm asking this here.

I don't think it's possible, but it would be nice to toggle on/off Notification center system wide. As it is now, I have to turn Notifications off for each individual app.

Sometimes i want NO notifications at all (like while watching a movie with someone who I might not want to see all of my notifications) and it would be easier to just turn them off, with one toggle, and turn back on again when I am ready to have notifications again (remembering which apps I had notifications turned on and which ones I didn't).