Predictions : winners of the quarter finals will be Holland and Germany. I'm unsure about the other ones. Colombia will pull it off if the referee doesn't comply with FIFA's strategy (Brazil has to go to the finals, it has been blatantly obvious in the past few games, especially the opening game) and the same, to a lesser extent, can be said of Belgium versus Argentina. I still fear Messi, at any rate!
Just my guesses, obviously.
Brazil has been pretty weak so far.
Biggest surprise to me would be if Costa Rica beat Holland.