Look out, Studio 6H.  The one who knocks is on his way, and he's got a whole new kind of rock to push.  '30 Rock' continues gearing up for its seventh and final season as speculation runs rampant how the long-running NBC comedy will close its doors, but at least one full measure is now in place.  'Breaking Bad's Bryan Cranston and frequent Christopher Guest collaborator Catherine O'Hara will join '30 Rock' season 7 in an important role for Kenneth Parcell, but who might they be to the Stone Mountain page?

While there's still time, TV news of the day has to go to TVGuide for reporting that 'Breaking Bad' and 'Best In Show' stars Bryan Cranston and Catherine O'Hara will next arrive at '30 Rock' for the final season.  The pair will play play Kenneth Parcell's parents in a manner of speaking, as O'Hara will play Kenneth's mother, while Cranston will take the role of her "friend" Ron, the pair having been mentioned in seasons prior.

While it remains unknown exactly when in the 13-episode season the pair will pop up, their arrival likely has something to do with Kenneth's new-found relationship with fellow page Hazel (Kristen Schaal), which '30 Rock' season 7 will see blossom into a "non-sexual boyfriend-girlfriend thing."

Elsewhere, we know that former '30 Rock' star Maulik Pancholy will return to the series to reprise his role as Jack Donaghy's assistant Jonothan, having been absent during season 6 for Pancholy's regular role on 'Whitney.'  It's also been speculated that '30 Rock's final season may finally see TGS writer Liz Lemon entering motherhood, after recent set photos emerged of Tina Fey holding a baby.

So what do we think?  Will Bryan Cranston and Catherine O'Hara prove every bit as eccentric and backwoods as Kenneth Parcell himself?  Tell us what you'd like to see from '30 Rock' season 7 in the comments!