HOW TO: Record Videos Of Your Ubuntu Desktop
Have you ever wanted to take a video of your sleek desktop, with your customised icons, window 
manager, GKrellM, and whatnot? Or make a video of cool XGL effects? Or a video tutorial to teach a few friends how to use a certain application? If you have, then this tutorial is for you.
Because Linux does not have a native screen recording application (well, it has xvidcap, but that can be difficult to set up), we have to use a workaround - namely using VNC to transmit the data of our X server to ourselves. I won’t bore you with the gory details, as there are many other sites which can do this for me - and they’re only a Google search away. This method will create a Flash video of your desktop, which you can then edit to your liking. J_K9 @ Linux » HOW TO: Record Videos Of Your Desktop