just want to mention that I have my sensors working on Fez. I will not be publishing the code anywhere because these 1-Wire sensors are a bit particular and I think not many people use them.
If you do have them and want the code, leave your email address and I’ll be happy to send it over.
The iButtonLink sensors can be found at: http://www.ibuttonlink.com/
Attached is an image of the sensors I have.