Here is openculture's mission: "Open Culture explores cultural and educational media (podcasts, videos, online courses, etc.) that’s freely available on the web, and that makes learning dynamic, productive, and fun. We sift through all the media, highlight the good and jettison the bad, and centralize it in one place. Trust us, you’ll find engaging content here that will keep you learning and sharp. And you will find it much more efficiently than if you spend your time searching with Google, Yahoo or iTunes."
This will be a real time saver for those wanting to find appropriate content to use in the classroom. I just added their RSS feed to my bloglines account.