Today marks the release of season 3 of "30 Rock" on DVD. The DVD contains all 22 episodes of season 3, as well as deleted scenes and audio commentary (by Tina Fey, Jon Hamm, Jack McBrayer, and Jane Krakowski, among others). It also includes a "behind the scenes with the Muppets" feature (showing how Muppet versions of Jack Donaghy and Liz Lemon were created for one episode), and the complete 1-900-OKFACE commercial. Continuing with "30 Rock" DVD tradition, there is a table read included on the DVD, of the "Kidney Now!" season finale episode. Season 4 of "30 Rock" is scheduled to premiere Thursday, October 15th on NBC.