Can't see the video? Watch this video now in a browser or download this video now. Astronaut and space hero Dr. Buzz Aldrin speaks with Xeni about his belief that America -- and that means you! -- must return to the moon, and soon. His nonprofit, Sharespace.org, seeks to provide "affordable space travel opportunities for all." Buzz believes that commercial space vacations should not be available only to the wealthy elite. Editor's note: the comment trolls really are taking over around here. One of them invades this very BBtv episode. Teresa, why doesn't disemvowelling work in video? We'll have to get our hamster-engineers right on that. (cameo by BBtv Production Assistant Rob Bergsma) Less