Uppercut is an automated .NET build framework built with NAnt.
From the site:
UppercuT is the insanely easy to use Automated Build Framework! Automated Builds as easy as (1) solution name, (2) source control path, (3) company name for most projects!!!
I stumbled on this project. I don't know how good it is, and can't evaluate it since I'm not in .Net, but the tagline sounds good. What do the .Net guys think?