http://butterflylabs.com/products/Their claims are not outside the realm of physical possibility like some past hardware miner scams have been but they also don't appear to be possible, at least with current commercially available parts.
The webpage is very thin on evidence that they aren't a scam. The most compelling thing I've seen is that they're looking to hire someone who speaks mandarin, though while that bodes well for their honesty it doesn't bode well for their product actually existing.

I understand that a fair number of bitcoiners have sent them money (or, well, that they claim so but I only know of one).
Anyone have any information? It would be a pretty good deal if it were true.