The NBA, launched a new commercial, featuring Dwyane Wade, Carmelo Anthony, Dwight Howard, Russell Westbrook and Joe Johnson bouncing basketballs. At first it seems random bouncing, but after a while you start hearing the popular Carol of the Bells -song.

Funny detail: When the clip was launched on, many viewers first saw a pre-roll video from Craftsman tools, with exactly the same idea..
Coincidence or not?