I'm reading Roving Mars, by Stephen Squyres, the Principal Investigator of the Mars Exploration Rover Mission. It's a fine book, and it made me go looking for information on the Web. Here's the Mars Exploration Rover Mission Home Page. Absolutely amazing stuff—not least the fact that both rovers are still in operation, over two years after arriving on Mars.
Click on the Payson Panorama to see the picture fill your computer screen. Then scroll sideways or down to see the rest of the panorama. It's an experience.