El hombre que cayó a la Tierra

Several things about this film make it worth watching... beginning with the premise that Earth's abundant water is what makes it rare in the galaxy.

But more intriguing is how the alien visitor, landing with absolutely nothing but the clothes on his back and a gold wedding ring, and knowing absolutely nothing about Earth culture, "gets up to speed" with astonishing, ruthless, clear-sighted rapidity...within days raising the $10,000 he offers a patent attorney for one hour of the latter's time. In that hour, Bowie's character outlines three basic patents -- including two which we can recognize today as digital cameras and music.

A particularly fascinating scene has our newly rich and already bored alien watching about 20 TV sets at once, while holding a small, battery-powered propeller. Repeated viewings will reveal that the disparate programs (presumably actual images of television shows) occasionally "come together" to form coherent messages... at which time our hero spins the propeller.