Screencasting on a Chromebook
UPDATE: This is no longer viable with every device on freon now ( and no host-x11) so it's dead Jim...
This feature has been requested many times at Chromebook Central and probably many other places and the answer in the past has always been to create a solo session of Google 'Hangouts On Air'.
Now, with the help of Googler Francois Beaufort and his How-To, it can be done via 'crouton'.
Check it out:
If you'd like to use a slightly modified version of 'screencast.sh' with some command line options added, checkout 'screencast'.
To obtain the file 'screencast', in a cros shell (crosh) do:
curl -Lk --connect-timeout 60 -m 300 --retry 2 "https://gist.github.com/DennisLfromGA/8441689/download" | ~tar -xzO > /Downloads/screencast