People love slow-motion cameras, as evidenced by the fact that Time Warp lasted three seasons despite having zero to do with either Gallifrey or Tim Curry in lingerie. And because the folks at adidas know what people love (Leo Messi scoring goals being pretty high up there), they brought along the high-speed cameras to a crowd watching Germany 4-2 Greece and got some fantastic reaction shots.
By the way, if you have a Tumblr account (and if you don’t, why?), the adidasfootball.tumblr.com page is freaking excellent.