NBA 2K13 will include, for the first time, NBA All-Star Week competitions such as the Three-Point Shootout and the dunk contest. Bet your arse you'll see this crazy dunk (at 1:15 in the video) in the latter.
The 2K Sports motion capture team brought in a duo called the Team Flight Brothers to put on the ping-pong balls and perform it and many other insane throwdowns. Special guest appearance by the 2K Insider, evidently in witness protection, at 2:10.
There are many other subtle animation upgrades made to the game, such as how the players palm the ball, hang on the rim, and display signature emotion during closeup shots. NBA 2K13 arrives on shelves October 2.