Not sure if "the best" but 1993 BYU v Hawaii. Tie game inside one minute and
Hawaii had a few chances from inside the 5 yard line to score. On 3rd down Hawaii threw an incompletion which stopped the clock....not a smart move because they attempted a 21 yard FG with about 40 seconds left that hit the upright....had they run it on 3rd, they could have run the clock down and then attempted the FG.
BYU got the ball back with about 35 seconds on their own 20. Drage caught a mid range pass and got the ball to about Hawaii's 20. BYU FG for the win.