I listen to podcasts all the time and just downloaded the RSS feeder (I was using iPodder before) because it said it integrated with MC, but it's not working all that well.
My favorites: the breakfast show with Pete & Geoff from Virgin Radio, WGBH Boston's Morning Stories, Forum from KQED and Perspectives from KQED (my local station, but well, I have to work at 9am, not listen to a talk show on the radio. . .)
I would LOVE it if MC 12 contained the ability to subscribe to podcasts natively. Now I use one app to subscribe and download and then I import those into MC in order to download them to the iPod. It gets a little messy when I want to delete old ones that I've listened to.
Anyway, it's a fair amount of manual work that would be great if it were automated.
Thanks for asking!