It is sort of sad that we have so few non-military PoDs suggested... I think I said as much in one of my comments on the alternate accounting thread. Of course, the solution to this problem has already been suggested in this very thread - go out and propose some non-military PoDs, eh?
Of course, I think I have to agree with what some of the posters here have said - it just seems easier to come up with military-based PoDs than good cultural ones. Any battle can be the basis for a military PoD, but you have to be more creative to come up with a cultural PoD...