Molecular rights management is a meme experiment launched by Jamais Cascio. It's IP protection for nanotechnology. One imagines nanobots that can't be copied, or moved from a certain location, or applied to a different medium.
MRM is likely to emerge for two primary reasons: the continued need for intellectual property controls, so as to prevent a wave "napster fabbing;" and the need for security to prevent the production of controlled goods ("assault rifles," figuratively or literally).
A glimpse from the future as it approaches. Or looking forward in classic extrapolation, seeing two trends (DRM and nano) rise and intersect.