Regarding the cancelled goal. It seems many claim that Tadic obstructed the Courtois direct access to the ball, as he was running towards the ball, somewhat in front of the GK. It looks like that. BUT, he was not offside in the first situation, he is only offside the moment the fucker heads it straight over Courtois, where both Courtius and Tadic stands pretty much still just looking at the ball fly above their heads. Crazy decision to cancel the goal.