Sitcom or Half-Hour Commercial?

Like Fox, NBC has always been shameless about promoting its own shows within its own shows. But last night’s "30 Rock" hit an all-time low in self-plugging, as the script of Tina Fey’s sitcom mentioned a list of things NBC including Jason Lee of "My Name Is Earl," "Deal or No Deal," and Conan O’Brien. Plus, the NBC logo made its usual regular appearances. If I had been playing a drinking game based on desperate NBC self-reference last night, I’d be painfully hungover right now.