I subscribe to about a dozen podcasts, many of which have new content daily. And, I like to sync them with my iPhone every morning. My question is, how can I get them to sync overnight, so they are waiting on my computer in the morning?
— Don Altorfer
Do you mean automatically download to your computer, or automatically sync to your iPhone?
In iTunes, click on the Podcasts section (not in the iTunes store, just in your iTunes library). At the bottom of the window is a big "Settings" button. Click it and then change the check time to "Every Hour." That will make sure iTunes will check all night long for new podcasts.