This will teach you not to watch 30 Rock in real time: NBC says an unspecified number of DVRs across the country failed to record this week's new episode. The reason? "An episode description ... matched the description of the prior week's 9 p.m. telecast, resulting in some DVRs failing to record the program though it was correctly listed as an original," the network said in an e-mailed statement to Vulture. Accident? Or is it a conspiracy theory to get folks to check out Hulu?