via the Situation Room Blog,

At 12:11 of the first period in the Coyotes/Capitals game, the Situation Room initiated a video review to further examine a play after the puck entered the Washington net. The referee informed the Situation Room that Phoenix's Brandon McMillan pushed goaltender Jaroslav Halak's pad and puck across the goal line. According to Rule 78.5 (ix) "Apparent goals shall be disallowed by the Referee when a goaltender has been pushed into the net together with the puck after making a save." This is not a reviewable play therefore the referee's call on the ice stands - no penalty and no goal Phoenix.

Watch the video and make sure to catch the last replay from the goalie cam...