30 Rock (2006)

"Sandwich Day," Season 2, Episode 14 Once a year the Teamsters bring in sandwiches from a secret spot in Brooklyn, and the writers treat it like a holy day. Liz's sandwich becomes the episode's running obsession, ending with her wolfing the whole sub at airport security rather than surrender it. It is a small story told at full speed, and the sandwich gag is one of the great Liz Lemon moments of the run.