I have spent a good 12-15 hours this week listening to my iPod (that I picked up in Singapore).   Atypically, I have spent less than an hour listening to music.  Instead I have been listening to podcasts.

Here are my favorites so far:

Polymorphic Podcast  Very good .Net technical cast.

.Net Rocks  This has been around for a while, but now the delivery mechanism is streamlined by podcasting.

CIO Podcast  Good general industry news, keeps me from having to read eWeek and C|Net news.

IT Conversations  Hour long interviews with significant members of the IT industry.

Daily Source Code   This is more general interest, but interesting.  It is done by Adam Curry, the former MTV VJ from the 80's.

I spend about 90 minutes a day driving, this time was previously such dead time.  I would often listen to AM talk radio (Air America or Michael Savage).  Now, I have a daily collection of podcasts to listen to and just like Tivo, I can fastforward or dump a program that can't keep my interest.

The tools required for all this:  An iPod, iTunes, and iPodder.