http://laptop.media.mit.edu/
At the moment Red Hat are the proposed Linux but hey Puppy would look real cool in a Red Fedora . . .
We at PuppyLinux.com believe we have the perfect Linux for a $100 computer
Puppy Linux runs in ram - making HD writes infrequent, in fact a HD is not a requirement
We believe Puppy could be stored on an internal IDE ram card
It is a reliable, generic (similar to MS windows in look) and Free Linux OS
- it is already being used in two embedded devices that we are aware of
If you are interested in further info:
http://www.goosee.com/puppy/wikka/
Ed Jason
Puppy Linux Project