The Fedora Project has just announced a Fedora Live CD that uses Sugar as it’s GUI. Included in the functionality are a bunch of XO Activites. Before I got my hands on an XO I attempted to run the virtual version that’s been available for quite some time. Performance was the problem, though, and I wasn’t able to use it effectively. This looks like it could be a good option for those wanting to be introduced to Sugar. See the mailing list announcement for further details.
