One of my favorite podcasts, the Warner Archive Collection Podcast, presents recordings of old radio productions. Actors would appear on radio in abridged dramatizations of movies, often reprising their screen roles. The podcast can be viewed and accessed from iTunes here. You don't have to have an iPod to play any of these; they download as .mp3 files. You can play them on your computer, burn them to disc, whatever you want.
Some of the highlights include the production of Carbine Williams (podcast released 13 April 2009) in which future President Ronald Reagan subs for Jimmy Stewart in the title role and a 26 minute long interview with James Best in which he reminisces about his career including his most iconic role, Sheriff Rosco P. Coltrane from the television series, The Dukes of Hazzard.
Go ahead and check it out. If nothing else, this'll give you something different to listen to during your otherwise monotonous daily commutes.