I was reading a mailing list and I found that users who participated in testing Unity had issues with usability since no one briefed them about how to go on with the interface. That exact same thing is going to happen to millions of users worldwide on April 28th when Unity is launched. I would suggest to replace the default audio and video files in the examples folder of Ubuntu with a quick video tutorial on how to get started with Unity and place a quicklink on the desktop saying , ' A quick guide on how to use Unity' . That would make Unity a million times easier to use. I am sure that wont eat up much space in the cd!
I know it is post the feature-freeze date but this video would make or break Unity and Ubuntu's reputation as a user friedly OS. Devs and Mark Shuttleworth, please do consider it.
Tutorial videos are usually not small in size. So might be a bit tough to get it into the CD.
But yea, nice idea ;-)