There are stretches where the San Antonio Spurs look like their usual dominant selves, then there are games like last night against the New York Knicks where they show their age and lack of a quality bench. But the Knicks on the other hand have been high flying this season, and showing a deeper bench than most expected. Speaking of high flying, how about this J.R. Smith reverse alley-oop dunk from last night. Ridiculous hops….