Podcasts
Ive read about and heard about Podcasts in the past, but only really tried them today with the release of iTune 4.9 which supports podcasts out of the box.
Im instantly addicted 
I did a google search and found that triple J offers some really cool podcasts here. The ones i subscribed to were Sunday Night Safran: religion, politics and hoochies, Hack and Dr Karl on triple j – triple j’s science guru.
Dr Karl has a podcast!
Ive gotta find more podcasts
Dr Karl podcast > all
Not sure about Dr Karl, sometimes hes a bit dodgy on the answers