Few people push Photoshop harder than the crew at the Gigapxl Project, creators of ultra-high resolution digital images and prints. Now their work, including a shot of the Adobe HQ in San Jose, appears inside Google Earth. You can zoom in from space onto individual images, then zoom way into each one. Here’s a screenshot.
To check it out, download the latest version of the software. Under "Layers" on left side, open the "featured content" folder, check the box for "Gigapxl Photos," and then look for the icons of a picture with a camera. More details are in the Google Earth documentation.