Some of my favorite matches were from the Galileo quarterfinals in 2012. Specifically, quarterfinals 1-1, 1-2, and 1-3. These matches prove just how important strategy and defense are. It allowed the number 8 alliance to upset the number 1 alliance.
The matches start are at 2:30, 26:30, and 59:55
http://www.youtube.com/watch?v=XOdXgFsUqz4