Well, coming up on the first in-production use of BreadBoard. I'll try and post a brief run-down on what the hell BreadBoard is soonish, but it's basically a net (or CD eventually) bootable stripped back FreeBSD, with facilities for plugging in modules that do stuff (eg, squid, postfix, named, etc).
The major thing I want to add to it soon is firewall support and some kind of unified configuration interface, but I still need to think about how I want that to work.