Which television show made this made-up holiday famous?

A Night Court
B WKRP in Cincinnati
C Seinfeld

We have ‘Seinfeld’ to thank for inspiring this unconventional celebration, which was introduced in a December 1997 episode called ‘The Strike.’ The show’s audience really latched on to the idea, and fans continue to celebrate Festivus every December 23rd.

The correct answer is Seinfeld.