Marble is one of my favorite applications. I especially like it in combination with OpenStreetmap. Free software and free maps, a brilliant combination. But I also love the historical map or the moon view.
Marble also is great as a demo application. It's easy to grasp and makes an attractive showcase. To make demoing Marble a bit easier I thought it would be nice to have a Marble live CD, and as I happen to have a great application for doing this at hand, I created some Marble live CDs. You can download them from my Marble live CD page.
I'm interested in feedback. So if you have questions, comments or want to help, contact me.