The two options I have tried are the XtremeMac TuffShields someone else posted and the PowerSupport protectors they carry at the Apple Stores. If you are looking for affordable go with the XtremeMac TuffShields because you can get 5 front protectors in a pack for $15 at WalMart. My only complaint about these screen protectors is that they look bad in fluorescent lights. They seem to reflect the light and it makes the protector appear streaky with a random rainbow-y effect. However, if you are not using them in an environment with fluorescent lights, you will most likely not even be able to tell the protector is on there. I now use the PowerSupport although I feel like they are a sort of a rip-off since you only get one front and one back (which I don't need since my case covers the back) for $15. However, PowerSupport performs much better in fluorescent lights, so I am happy.