So far I've rooted for the Czechs, U.S., T and T, Korea, Australia, and Germany. Those are the only ones I really wanted to do well (the other matches I usually just hated one team or didn't care). I've had mixed results. 8 wins, 4 ties, 9 losses. I really enjoyed Argentina's games and really didn't like England's games. Go Germany!
Be sure to watch this Ronaldinho video clip
http://www.youtube.com/watch?v=lsO6D1rwrKc