J.R. Smith hit a loooooong 3-pointer to beat the buzzer at the end of the 1st quarter during game 2 of the Knicks – Celtics series. J.R. then launched one of the greatest individual celebrations in the history of sports. It should also be noted that Smith basically shot that while being quadruple-teamed. Seriously. Watch the video. This is the apex of J.R. Smith-ness. It has to be all downhill from here.