The TWiT Netcast Network: Entertaing netcasts for technology geeks.
Software Engineering Radio: The highest quality netcast for SW engineers.
Heise Developer: If it wasn't for SE-Radio this is the one. (German)
Hanselminutes: Microsoft touch. He always ask the right questions.
This Developers's Life: Stories about developers.
Biochemistry Revealed: The fundamentals for everyone.
This Week in Virology: A weekly conversation. Entertaining and enlightening.
This Week in Microbiology: Life is astonishing almost weekly.
This Week in Parasitism: More seldom but worth waiting for.
Brain Science Podcats: For everybody that has a brain.
ITConversations: A variety of interesting conversations. Discontinued :-(
omega tau: Science in your headphones. Thanks to Nora and Markus.