Polk Audio blew my mind (and my pant legs) with a stealth audio system of five in-ceiling speakers and two in-floor subs. The system had impact and articulation, and I kid you not, if you stand over the slot that load's the subs' sound into the room you'll feel a cool breeze!

I was particularly surprised at how the movie action was anchored effectively on-screen from the in-ceiling speakers. Polk makes no bones that these don't do what floor-standers do, but that they're a clear cut above typical in-walls. Hear, hear!