my favourite goalie move, and its one i've been using more and more lately, is when the other team is on a breakaway, I pull my goalie a bit back towards my net, and then full steam skate towards the player and push the dive button. Essentially, if you aim correctly, they are totally unprepared for it and the player will either lose control of the puck or fall down, or both. Of course it is risky, but its a lot of fun... Its like a full body pokecheck.