Misfit does 29ers for the most part. Brodie has a bike called the Tryst [
http://www.brodiebikes.com/2007/2007_bikes/tryst.php#] with disc brakes and what looks like an eccentric BB. They also have a 1-ball in their clearance section [
http://www.brodiebikes.com/2007/onli...clearance.php]. If you want to run FG, you'll need to ditch the disc rotor and bolt on a cog, or maybe Phil makes a disc hub fixed. The IRO Mia deal is only for the 20" models in red I think, but check the site.
Another option is to build up a rear wheel around an ENO fix/free hub. Then you can stick it in any vertical dropout mtn frame you want. Maybe find an older Stumpjumper HT with canti/V bosses so you don't have to worry about discs so much.
edit:
IRO Mia sale:
http://irocycle.com/iro/index.php?ma...products_id=60