Rod Roddenberry has posted a rare appearance from the 70s. Gene Roddenberry interviews William Shatner, Shatner in turn interviews Roddenberry. Follow this link and type the old Konami code into your computer to listen.
http://www.genesjournalcomic.com/
(Konami code = up arrow (x2), down arrow (x2), left arrow, right arrow, left arrow, right arrow, B button, A button).