Questions about ChromeOS, mainly about running it *within* Ubuntu.

ChromeOS is available for installation on Ubuntu, 12.04/12.10 (previous versions incompatible as of now).
It is a part of lightdm-chromeos-login project, by dz0ny, that installs the ChromiumOS desktop and its Aura window manager within Ubuntu. It even lets you login it to a full-blown Chrome desktop straight from the login screen.

OMG! Guide to installl here.
Website here.