WHOA! How do you have enough time to listen to all of these? Thanks for the list, I'm going to check these out.
For the most part I don't, or just barely scrape by.
On my main desktop computer, I have something like 250 unlistened to podcasts (most of them entire semesters of audio from Princeton/Harvard/Berkeley courses). On my work laptop, I have about 60 unlistened to podcasts (most of them tech/project management related), and on my personal laptop I have about 125 unlistened to podcasts (however, most of them are video podcasts like Mahalo Daily, Rocketboom, and Triggerstreet TV).
I do a lot of travel for my job and do a lot of listening on airplanes. I also do a lot of tech gruntwork that doesn't require what we call "thought" (for example, today all I'm doing is reformatting huge chunks of data for this database I designed, so all I'm doing is running Excel spreadsheets through a reformatting script). This is perfect for audiobooks and podcasts. Last summer when I was doing a lot of travel, I was averaging 4 to 5 hours of audiobooks/podcasts a day plus one DVD/movie-in-a-theater each evening, five days a week. The weekends were totally devoted to the wife, so no iPods or movies were allowed.