Upfronts 2012: The end is near for '30 Rock' NBC confirmed Monday that "30 Rock" would end its seven-season run this season with a final 13 episodes. Speaking Monday at his network's upfront presentation, held once again at Radio City Music Hall, NBC Entertainment Chairman Robert Greenblatt called the multiple Emmy-winning show "synonymous with wit and originality" and said it would conclude with an hour-long series finale. He later told Show Tracker that he thought the series would be "charged up" as it went into its home stretch. "30 Rock" returned this year in January, its debut delayed by creator and star Tina Fey's pregnancy. It led off NBC's prime-time slot for the first time, airing at the top of the network's Thursday comedy block at 8 pm. It will reprise that slot next year. NBC will follow "30 Rock" with "Up All Night" with mainstays "The Office" and "Parks and Recreation" rounding out its Thursday comedies. Despite the exit of another "Office" cast member (Mindy Kaling, who leaves for a new sitcom on Fox) Greenblatt said the workplace show "still [has] creative juice," noting "explosive story twists" in the coming season. Photo: Tina Fey as Liz Lemon in "30 Rock." Photo credit: Ali Goldstein / NBC