I've gotten hooked on podcast, but I've found something very strange. I thought there would be plenty of cartoon-related podcasts, but I cannot find any aside from the ones dedicated to anime only. This is very strange, considering that Channel Frederator is one of the most popular podcasts around.
TZ has a semi regular podcast which covers as many different types of animation as the site and forum does.
And no annoying HC old man rants to boot!
Spline Doctors has interviews with the Pixar guys:
The Animation Podcast has interviews with master animators Glen Keane, Andreas Deja, and Dael Bear, as well as interviews with John Musker and Ron Clements, Ray Harryhausen, and several others. These are names any fan of animation should know:
There is a semi-regular podcast from the fansite Pixar Planet: http://pixarplanet.com/radiopixar
There's a podcast on iTunes called 'World's Finest Podcast'. All about reviewing the DCAU.