DillPickle is a slim Gherkin-compliant BDD story runner for .NET.
It has borrowed (or stolen?) most of its functionality from NBehave, but added the hooks I needed and some more stuff.
More info coming soon at http://mookid.dk/oncode/dillpickle
One day, maybe I'll tweet something as well... @mookid8000
DillPickle is Beer-ware.