Even though Wikipedia is not an authoritative source, I thought it had an excellent page with colored pictures of projections. I chose this one because I thought it had a cool name and then once I saw it's history and purpose, I really think it's cool.
Included is the text of the page from Wikipedia and the link below. It even gives the mathematical formula for the projection....uggh, I hate math!
http://en.wikipedia.org/wiki/Craig_retroazimuthal_projection
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The Craig retroazimuthal map projection was created by James Ireland Craig in 1909. It is a cylindrical projection preserving the direction from any place to another, predetermined place while avoiding some of the bizarre distortion of the Hammer retroazimuthal projection. It is sometimes known as the Mecca projection because Craig, who'd worked in Egypt as a cartographer, created it to help Muslims find their qibla.
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