splash Masque Clear Screen Protector for iPhone 4 4G  4S AT&T and Verizon (3-Pack + 2 Bonus Back Films)
It seems most of the negative reviews for this product come from faulty packaging or absent products.  I've ordered this product twice and I've received exactly what I was promised.  As for the product itself, the fact that I've ordered it twice should indicated that it's great.  Installation requires a tad bit of skill and a steady hand to get a good alignment, but that's true of all screen protectors.  The protector cleans easily and leaves no residue.  Simply put, it's a great product.