How can I detect the angle of the platform the player is on?

Attempting to have my player slide down steep slopes ( >45º), and I know how to code into my character controller the sliding movement, but I can’t figure out is how to detect when the player is actually standing on a slope… It’s not a rotated platform, so I can’t get the rotational value, it’s just a basic mesh with a slope. Any of you guys know the answer?

Okay I figured out that I need to grab the normal.

function OnControllerColliderHit(hit : ControllerColliderHit) {
    Debug.Log("Normal vector we collided at: " + hit.normal);
}

http://unity3d.com/support/documentation/ScriptReference/ControllerColliderHit-normal.html