Unlockable: Reebok Gear
Head to the in-game cheat menu (the "RBK password"), and type in "h3oyxpwksf8ibcgt" (without the quotes). If inserted correctly, you will get a bunch of new Reebok-related jerseys.
Unlockable: CCM Gear
To get old-style CCM uniforms, type "fh6ft48h9kkhb" in (without the quotes) as your password in-game. (unverified)
If you are speeding towards an opponent, or pressing the sprint button, and you check him, you will get called for a charging penalty. Be careful!