Dune

Fear is the mind killer.

The heat of an unforgiving sun in the open desert. Sandstorms. Spiceblows. And the worms.

Forget David Lynch's... unfortunate... failure. Forget anything Brian Herbert and Kevin J. Anderson touched. Frank Herbert's grand epic (and thinly veiled metaphor for oil) still stands as one of the great literary achievements of science fiction, as well as one of its wierdest.

A Fremen stillsuit may lose only a thimbleful of water each day. A 190 lb. male body contains approximately 114 lb. of water, or 13.65 gallons. Assuming a thimble holds 1 tablespoon, or .004 gallons, this person would lose approximately .028% of their body's water each day in the open desert.

Of course, engineers are pretty sure the suit (as described in Herbert's novels) would end up cooking its wearer. That said, the series couldn't exist without stillsuits and the Fremen who wear them.