@ Art: Absolutely. The house has 6 speakers installed in the walls. I've yet to hook them up to anything to see how they sound.theres no center channel in the front, but I have easy access to the backside of the front wall, so adding a center channel shouldn't be an issue. I'll also need a sub, but they're pretty non-directional so I should be able to work that in somewhere.

@ Mr. Foxtrot: I'll keep searching, I guess. The screen I've found so far is about $675. I need to do some poking around to see what kind of room I have in the HVAC soffit that runs along the front wall. I really don't want to tear up a bunch of drywall, so I'd probably be willing to compromise on the whole flush-mount in the ceiling concept.