Apple has always made superior laptops. They just work, aren't ugly with dozens of panels, protruding pieces of plastic and boneheaded design placement like my microphone that is located right near my loud fan.
A transparent laptop screen? It sure sounds like a trick, but even a blog called Mighty Optical Illusions concedes that it's stumped by this one.
This is not a Photoshop trick, this is his REAL desktop image.