In the news....
From U.S. News and World Report
http://www.usnews.com/usnews/culture/articles/050502/2tech.div.htm

Definition of podcast?
http://en.wikipedia.org/wiki/Podcasting


Finding Aggregators:
http://www.podcastalley.com/phpBB2/links.php?id=1&
http://ipodder.org/
http://ipodderx.com/
http://iPodder.NET


Finding podcasts to listen to:
http://www.podcasting-station.com/

Examples of education podcasts:
http://davidwarlick.com/podcasts/index.php

http://radio.weblogs.com/0142338/

aka
http://www.spanishpodcasting.com/


How to info...
http://podcasts.engadget.com/entry/5843952395227141/


Software to "grow your own" info...
PC
http://www.blogmatrix.com/sparks_main/


More for the mac...
http://www.podcastalley.com/phpBB2/links.php?id=12
http://audacity.sourceforge.net/download/mac


Hosting your podcast:

Slapcast:
http://slapcast.com

Open Podcast: (like an audio-wiki?)
http://openpodcast.org/

You can look up more at podcastalley