Imageready’s Supercharged Eyedropper
In previous versions of Photoshop, you could only use the Eyedropper tool to sample a color from other open images in Photoshop, but for some reason, ImageReady had a supercharged Eyedropper. If you clicked the mouse button within your image and held it down, you could leave your image window and sample colors from, well… just about anything—including your computer desktop or any other open application. Freaky! Fortunately, Adobe finally added this same power to Photoshop’s Eyedropper tool.