UPDATE: I knew the game was exciting, but I didn't quite appreciate the significance of it until reading this from Jenni Carlson's article:
While there have been tens of thousands of NBA games over the decades, there has never been one quite like the Thunder's overtime thriller against the Nuggets. Kevin Durant scored 51 points. Russell Westbrook scored 40 points. And Serge Ibaka posted a triple-double that included a whopping 11 blocked shots.
Never before had such stats been posted by one team in one game in the history of the league.