[TheNoodleMan]

Pacers at Nets game 5 of the 2002 playoffs.
Back then it was still best of 5 in the first round.
At the end of regulation, Reggie Miller hits a 35 footer to send the game into OT.
With 8 seconds remaining in OT and the Pacers down by 2, Miller got the ball at the arc and everyone in the world thought he was going to take the shot and go for the win. Instead he pumpfakes the defender, drives the land and dunks to send it to a second OT.
The entire effort was ultimately in vein, the Pacers were destroyed in the second OT, but Miller dunking was the most unexpected clutch moment I have ever seen. It was the only time I can remember him dunking in anything other than an uncontested fast break situation.