Seinfeld: Lobster Dinner
Kramer, at the beach in the Hamptons with friends, finds a rope dangling into the water and pulls up a pot full of lobsters. He serves them for dinner that night, and his host says that he's poached them from a commercial lobsterman. Kramer says, "What's the problem? There's plenty for everyone." This highlights the wedge between individual incentives and optimal social outcomes.