Catch up TV on 30 Rock. Watch the latest and all other episodes of 30 Rock now online, broadcast on 7Two. Catch up on your favorite 7Two TV show: 30 Rock. Replay tv on its best! Liz Lemon is the female head writer of a nighttime live sketch/variety/comedy program called "TGS with Tracy Jordan." She struggles with keeping Tracy Jordan, the show's unpredictable star, and Jack Donaghy, the nosy network executive, in check, while dealing with the rest of the staff's antics and attempting to salvage her own personal life.