A couple of NBA 2K11 videos have been made available today. The first is a short snippet from Sony's E3 briefing, which you can check out here on GameTrailers. The clip can be found around the 2:09:30 mark.
Fox Sports have also posted a video featuring Wes Johnson and Evan Turner talking about NBA 2K11 and showing a few clips of them performing mo-cap for the game. You can watch that one here.
Thanks to the guys over at Operation Sports for the heads up!