Over the years I have been a fan of Boxwave screen protectors. I have used them on various Palm devices, my old RAZR phone and my Nintendo DS. Their anti-glare screen protector for the Nexus One is basically the same product that I have been using on all of my other devices. There is one key difference that I'll explain which is actually inherent to the phone not the screen protector.First, the product and its packaging are pretty top notch. The screen protector itself is sized perfectly for the Nexus One. They leave about 0.5mm between the protector and the edge of the display glass. This means that if you apply it right you're not going to have any loose edges hanging past the glass, and it is less likely to interfere with cases. Boxwave also includes a soft fabric screen wipe and a cardboard applicator tool which help you get the screen protector on without bubbles or lint on the first try.The anti-glare version of this product features a very slightly rough surface which diffuses reflections. It also gives the screen a superior tactile feel. I find that my typing speed is improved because I don't feel like my fingers are going to slide to the wrong spot. The surface texture also helps downplay the visibility of fingerprints and grease. They are not eliminated, but it takes more build up for them to become obvious than on the bare glass.Finally the anti-glare texture brings me to the reason I'm giving this 4 stars instead of 5. The very high resolution of the Nexus One's AMOLED display means individual pixels are small enough that they seem to be diffracted in slightly different directions by the screen protector. This results in a little bit of grainy appearance with a very minor rainbow effect. It takes some getting used to, and actually becomes less apparent with wear on the screen protector. This is a property of almost all anti-glare screen protectors, but again the exceptionally high resolution display on the Nexus One makes it more apparent.Overall I am very happy with this screen protector, and if it ever wears out or gets damaged (even though it is washable) I wouldn't hesitate to buy another from Boxwave.