30 Rock Season 1 Episode 13 : Up All Night

It's Valentine's Day, and the TGS crew is celebrating by pulling an all nighter to put together a new episode. While Pete completely forgets the holiday, Kenneth and Cerie may be starting an office romance. Meanwhile, Liz wonders if Dennis is back in her life after she receives flowers from a secret admirer and newly divorced Jack wants to party with Tracy, who for once wants to spend a night alone with his wife instead.