Bingo cheat:
Attain level 2 in the EA Sports Bio.

Ray Lewis:
Attain level 3 in the EA Sports Bio.

1990 Eagles:
Attain level 4 in the EA Sports Bio.

Steve Spurrier:
Attain level 6 in the EA Sports Bio.

Priest Holmes:
Attain level 9 in the EA Sports Bio.

Wind Gust cheat:
Attain level 14 in the EA Sports Bio.

Super Bowl 38 stadium:
Attain level 19 in the EA Sports Bio.

Tiburon Stadium:
Attain level 29 in the EA Sports Bio.

Change Music:
Hold until the Help menu comes up, then press L1 or L2.

Amazing player for cheap:
Create a player in Franchise mode. Instead of editing the stats, leave them how they are. Exit the create player menu and go to Free Agent signing. Sign your created player for a 7-year deal for as cheap as it will let you. Go back to create a player menu, select your created player and choose to edit his stats. Now crank them as high as you want. Now you will have a player rated 99 in everything, but are only paying for a player that is rated 28.

Get Madden Cards Easily:
Go to Rosters and give every starter on your team a 99 rating. Then go to a different team and make their team rating 0. Play a game against them and you'll wind up with tons of tokens.

Thanks to Revolution readers BigEd, Danny Wilder, Matt, Scott Chilafoe, robcrx510, JESTER6954, Hardy Boiand boiboi!