Check out a first look at 30 Rock Season 4 Episode 3 "Stone Mountain" airing this Thursday October 29 at 8pm on NBC. It is not labeled as a Halloween episode but I am going to give to give that label anyways since there seems to be some costume.
Episode Synopsis: Liz (Tina Fey) and Jack (Alec Baldwin) venture down south to Kenneth's (Jack McBrayer) hometown to discover new talent. Jenna (Jane Krakowski) tries to make friends with the writers to solidify her place at "TGS" before the new cast member is hired. Meanwhile, Tracy (Tracy Morgan) fears for his life when two celebrities die and he believes he's the next to bite the dust. Scott Adsit, Judah Friedlander and Keith Powell also star.