The Walker Art Center's web casting branch, the Walker Channel, just announced that their broadcasts are now available on iTunes U. The channel provides webcasts of the Walker's programming, including lectures, readings, and presentations involving artists, scholars, and critics of contemporary art and culture. The Walker Channel is an invaluable resource for contemporary art research -- a quick glance through the archives and one will find artists talks with the likes of Cameron Jamie, Thomas Hirschhorn, Raqs Media Collective (conducted by Steve Dietz), Steina Vasulka, Amy Youngs, and much more. Their entire archives are not yet available via iTunes, but hopefully soon will be.