30 Rock 8 p.m., Channel 7
The final month of episodes begins, as the satire that won three best-comedy Emmys approaches its Jan. 31 series finale. I will be sad when it’s gone, but glad that the show went out before it rusted up. Sure, “30 Rock” has had ups and downs over the years, but so has every other great network series. In Thursday night’s episode, Octavia Spencer (pictured) plays herself, with Tracy trying to direct her in his new movie.