I've put together 14 high-quality original podsafe instrumental tunes from my Penmachine Podcast into a CD album you can buy. It also includes a bonus data DVD with a bunch of cool stuff that isn't on this website. Find out more...
If you're interested in how encryption and other technologies can be used to help maintain anonymity and privacy on the Internet—for good and bad—the latest Security Now Podcast with Steve Gibson and Leo Laporte is a real lesson.
They discuss the Freenet Project and The Onion Router (TOR) system. Both are fascinating, but note that TOR in particular requires that you really pay attention to Gibson's explanation to figure out what the heck is going on. There is a full-text transcript as well if you don't want to listen to the one-hour audio.