I just added a Favorite Podcasts module to my blog's right rail.
Manager Tools is a great podcast that I subscribe to via iTunes. Each podcast is about 30 minutes and they cover a variety of topics. You need to register to get the older casts.
Whether you're new to managing old or been at it for a while their podcasts will have some useful nuggets.
My biggest issue now is that my ipod and shuffle don't work. I need to buy a new one.