In case you were wondering what your next desktop background should be...here you go. You're welcome.
No, seriously, check it out. This is the first gigapixel image produced from almost 900 images snapped by the Curiosity Rover, and all billion-plus pixels of it are totally amazing. The clarity with which you can see the rocky landscape of the Red Planet, looking south from the it's perch at the so-called Rock Nest, is unmatched by any images we've seen. It's like being there. You can almost feel the Martian wind blowing crimson sand past you. You can see the amazing panorama courtesy of NASA right here, along with the option to view the image on a cylinder, look at raw and color-corrected versions, and of course zoom in to get a better look at the details of what certainly seems like every rock on the planet.