Seinfeld
Festivus! So many pop culture references came from Seinfeld - a sitcom that broke television barriers. Seinfeld even stood out from other sitcoms in its postmodern interpretation. The superficial conflicts and minimal emotional connection between the characters in the show only serve to futher aid in making the audience never feel sorry for any of the characters. The series finale was the third most-watched series finale in TV history.
Fun Facts: The myriad of phrases made popular by the series are collectively referred to as "Seinlanguage", and include "re-gifter", "yada yada yada", "not that there's anything wrong with that", "spongeworthy", and "no soup for you". NBC offered Jerry Seinfeld more than $100 million to return for a 10th season, but he declined.