As a result of all of the recent development with Ubuntu (the new version is out) I have thought of something interesting: to allow a liveCD to instantly (+ the time it takes to burn a CD) be created based on the current operating sustem:
When installing for the first time, it would ask whether or not to keep the extra files. If 'yes' then this feature would be enabled. Then, when you inserted a blank CD, one of the options on the right-click menu would be 'make a CD to put this operation system on somebody's else's computer. It's not that useful, but would be very useful for any Linux user who wants to spread it around.