The Total Perspective Vortex.

Zaphod Beeblebrox was filled with apprehension as he was escorted to the Frog Star’s Total Perspective Vortex. As he drew closer to the dreaded machine, he could hear the screams escaping from its victims. Zaphod Beeblebrox knew that one second in this savage torture device would turn his mind to mush.

The Total Perspective Vortex gives a person a complete glimpse of the whole universe almost instantaneously. It compares the incredibly small size of the person to the enormous size of the universe. It shows him the size of the "entire unimaginable infinity of creation" along with a tiny little marker that says, "You are here."

To everyone's surprise and amazement... (for the rest of this story, read the damn book)
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Excerpt from The Hitchhiker's Guide to the Galaxy.

Ofcourse, I only bring this up coz I stumbled upon Nikon's Universcape,
a flash based somewhat-total perspective vortex. Be humbled.

(via Sam)