Goal or no goal is easy to review if the goal is given. There is a natural stoppage of play. But what if the goal is not given and the defending side starts a counter attack? Do you stop the play when there is an opportunity to score? What if the other side does put it in the net? Do you annul one goal for the other? Video review is not certain either. Take the Quagliarella shot against Slovakia. Can't tell anything from that camera angle and not so certain if it would have been helpful on the other end. On the offside calls, the biggest problem is the current interpretation of offside. When the slightest part of the body can be the determining factor, it makes it too close to call. I think we should go back to the old interpretation, that there needs to be light between the two bodies. Even that creates close calls but I think less controversies than what is done now.