Have you listened to South San Francisco's very own (drums please), Genentech's new podcast, Two Scientists Walk Into a Bar yet? It's really interesting and they cover different topics such as Cancer and Your Immune System and How Your Cells Talk to Each Other.
Jane Grogan, Principal Scientist of Cancer Immunology at Genentech is an accomplished scientist leading research on inflammation, autoimmunity and tumor immunobiology. She has a background in radio which is, well, quite perfect. You really don't want to miss this, especially if you love science.