Audio interviews with two spacefaring luminaries have recently become available.
The first (courtesy TrekToday.com) is Garrett Wang on the James Madison show (iTunes). It's not the best interview: it starts off a bit slowly, the reception occasionally drops, and at one point, Mr. Wang puts the host on hold while he takes another call. But there are some fun stories as he reminisces about playing Harry Kim on Star Trek: Voyager and the interplay he had with other Star Trek and UPN actors. Tune in to the James Madison podcast tomorrow for a similar interview with Robert Picardo, who played that show's holographic Doctor.
The other interview (courtesy TheForce.net) is a brief one with Anthony Daniels, aka C-3PO, wherein he talks about science, Star Wars, and scouting. His message on the importance of science in the present and future of society is spot-on and would be right at home in Scientific American or Point of Inquiry.