Burt Rutan's SpaceShipOne performed another drop-test/glide-test on 19-Nov-2003. Scaled Composites are gunning for the X-prize, and currently seem to be in the lead.
The progression of SpaceShipOne test flights are meant to ultimately snag the X Prize -- a $10 million purse for the first private vehicle to propel passengers to the edge of space and meet a set of guidelines established by the X Prize Foundation of St. Louis, Missouri. Teams around the world are vying for the X Prize money, with numbers of suborbital concepts being pursued.
All in all, a very neat project.