Some nice closeup images have been posted on bricksonthebrains.com - click here to view the NXT images. Filip pointed out to me that there appear to be GEARS in one of the images... take a look at the box image and... yes, those are gears.
You'll also get to see a closeup of the digital screen on the Intelligent Brick. There are also some images of a cable, the back of a sensor, and a connected sensor. Finally, some good closeups of the scorpion and Alpha.