Go to My Madden (Main Menu) and then pick Madden Cards. Select Madden Codes and enter the following cheats:
L96J7P: Human Plow Card
D57R5S: Lame Duck Card
X78P9Z: Mistake Free Card
Y59R8R: Mr. Mobility
D59K3Y: Super Dive Card
V34L6D: Tight Fit
L48G1E: Unforced Errors Card
Z28X8K: 3rd Down
P66C4L: 5th down
J33I8F: Bingo! Card
B61A8M: Da Bomb Card
I76X3T: Da Boot Card
M89S8G: Extra Credit