"At the 22nd annual Flat Information Displays conference sponsored by iSuppli here, IBM's display laboratories demonstrated a low-cost way to get high-resolution 3D images from a large-screen television or home-cinema projector that's already on the market."
Not sure what they're doing exactly but I'm guessing this ain't gonna work with LCD :)
At a more integrated $20 level, maybe they add another wheel, with alternating polarised windows? That would make sense. This would be a great, cheap solution for those of us who're going to need to be proofing 3D content too, to bring us back on-topic :)