I just started listening to some science fiction podcasts. Very useful when hands are otherwise occupied. The following caught my ear, Friction, by Will McIntosh, a beautifully imagined and carefully paced short story.
Another science fiction blog I have been listening to a bit is Starship Sofa. Recently they broadcast short stories nominated for the BSFA Award Best Short Story 2007. I particularly enjoyed The Merchant and the Alchemist’s Gate by Ted Chiang.