This may be old news to some, but it is nevertheless very cool (and nerdy):
The paper was expanded from this guys dissertation on inverse protein folding (the link above is just about ties). I scanned through the dissertation itself but have no idea how the two topics have enough in common to be in the same paper. But he's smarter than me, so he gets the benefit of the doubt.
(also, despite the URL, it is not a long article)