Ten minutes after Antonio Nocerino gave Milan a 1-0 lead in the first half of their battle for first place against Juventus, Sulley Muntari headed in a second goal for Milan and even though the ball was well past the goal line, it was not counted.
Of course, this could be yet another example of why goal line technology is necessary, but being Serie A, there's always that chance the officials had reason to conveniently not see a bright yellow ball bounce a couple of feet into the goal before being pulled back out.
Video this way...
Update: Juventus came up with an equalizer from Alessandro Matri in the 83rd minute after Matri's had an earlier goal disallowed because of a questionable offside call. So Milan retain their one point lead in the table, while Juve still have a game in hand.