A repost, but they have cool new stuff!
Unfortunately not all links are working properly.

Chaco Canyon:

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xRez is a collection of insanely high resolution panoramic images in various categories covering natural and urban subjects. If you’re into zooming down into a gigapixel image to look up a person’s nostrils, then this is for you.

xRez is a consortium of digital artists committed to exploring new creative opportunites made available by the advent of extremely high-resolution gigapixel digital photography. We believe this is clearly the next revolution in photography, allowing photographic experiences with a deeper level of fidelity and impact than previously seen. Further, by combining powerful 3d tools and techniques appropriated from the visual effects field, possibilites arise of new imagery and animation that are truly novel and unprecedented.

xRez – Extreme Resolution Photography

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