Former NASA Administrator Mike Griffin used to refer to commercial alternatives to NASA’s Ares rockets as “Paper Rockets,” but commercial vehicles like Atlas V, Delta IV and Falcon 1 are quite real and available today, while Ares 1 and 5 are grossly over-budget and way behind-schedule:

http://www.youtube.com/v/VqR7IDzA5Xo NASA should buy commercial space services whenever possible from NewSpace companies like SpaceX, Virgin Galactic and Bigelow Aerospace. The Commercial Spaceflight Revolution is happening now!