http://www.youtube.com/watch?v=YxBSYit49c8
http://www.youtube.com/watch?v=-afQyZIllV8&feature=related
Still in early alpha, it looks really promising though!
You can even travel from planet to planet without a loading screen. I haven't gotten a chance to try it out though.
Download StarForge Here - http://www.forgeplanet.net/starforge_build.php
Official Site - http://www.starforge.com
And yes, i'll be sticking around for a while