When you are coming down on a breakaway, press Right Analog-stick Up. This will cause your player drop the puck to his skate, then kick it back up to his skate. This is a highly effective move in the game.
Easy goal
While skating near the opposing team's goal, hold L2 and press Right Analog-stick in any direction. You will flip the puck up into the air and bat it into the net like a baseball.
Wayne Gretzky
Create a player and enter "Wayne Gretzky" as a case-sensitive name. His stats will all be at 99.