[soylentcola]

> I might move my head slightly from time to time and pick up the sound from different angles. If that could be simulated using headphones, that would be pretty cool!

This could surely be done (and probably has been done) using a VR headset or even just IR lights and cameras a-la TrackIR. If latency was low enough, you could process the sound to model the changes caused by head position/orientation.