High Quality Content by WIKIPEDIA articles! The untitled tenth episode of the second season of the television series 30 Rock was first broadcast in the United States on January 10, 2008, on the NBC network. The episode was written by show runner Robert Carlock and Donald Glover, and was directed by Richard Shepard. Guest stars include James Arden, Julia Barnett, Kevin Brown, James Cavanagh Burke, Grizz Chapman, Edie Falco, Toby Huss and Gladys Knight, who appeared as herself. The episode focuses on Liz Lemon (Tina Fey) and her decision to invest in real-estate, Jack Donaghy`s (Alec Baldwin) choice between his job and his girlfriend, and Kenneth Parcell`s (Jack McBrayer) addiction to coffee.