The WNYC show Radiolab delivers up fascinating tidbits about science, presented in compelling narratives. You can subscribe to their podcasts via iTunes or at the Radiolab website.
Tonight they are having a live event at Water Taxi Beach here in New York. Unfortunately it's sold out so I won't be attending but if any video of it surfaces don't be surprised to find it here.
Here's an mp3 of their latest episode, Parasites. Just so you're warned: there are some kind of gross parts in this episode.