30 Rock has its groove back. The current episode, “Retreat to Move Forward,” (view on Hulu.com here) has plenty of what the early episodes contained, but what the most recent episodes have lacked. Lots of bite-the-hand-that-feeds-you jokes aimed at GE executives (including the hilarious clip above, a jab at Six Sigma during an executive meeting called “The Retreat to Move Forward”). The episode also allows Jane Krakowski the chance to show off her character, Jenna’s self-absorbed ditz. And there’s an obvious, but very funny gag involving the Wikipedia page of Janis Joplin that, quite predictably, caused a lock-down on the page after the episode aired.