Where can i get physics materials?

Every tutorial about physics material seems to indicate that i should already have physics materials, but when i try to use one there arent any to choose from

am i missing something? do i need to download them? google has been no help

Here are the original Bouncy, Ice, MaxFriction, Metal, Rubber, Wood, and ZeroFriction from Unity:

http://exninja.com/files/PhysicsMaterials_From_Standard_Assets.unitypackage

Make some; there aren't any built-in. In the project view, select Create -> Physic Material. Also, there are some in the standard physic materials package, which you can import.

Standard Assets comes with several. If you didn't add them when you created your project you can import them after the fact.

Also, you can quickly create your own: Assets->Create->Physic Material.