JK Brickworks created a "Large Brick Collider" (LBC), which can accelerate a LEGO soccer ball to nearly 8 miles per hour. What will minifig scientists discover when the high-speed particle collides with the brick? Enjoy:

As the video explains at the end, this is a submission to the LEGO Ideas site, which is pretty amazing (check out, for example, LEGO Lothlorien).

If you like that, you need to watch How to Become a LEGO Designer.

(Via Kottke.)