While it certainly wouldn't qualify for Paul Schrader's canon of great films (or anybody else's, for that matter, including mine), whenever I happen across this 1957 movie (sometimes calling itself The Abominable Snowman of the Himalayas) when it airs on Turner Classic Movies, I inevitably watch until the end. Director Val Guest treats screenwriter Nigel Kneale's intelligent script so matter-of-factly that parts of the movie achieve a documentary feel (helped along, admittedly, by the wealth of stock footage of the Himalayan mountain range and avalanches).
I remember staying up late one night to watch this, for the first time, as a child, and being absolutely mesmerized by Peter Cushing's long-awaited face-to-face encounter with the Yeti. The effect remains the same for me today: menace mixing with mystery as the unbelievably tall beings step from the shadow into the light, finally revealing the eyes of the Yeti. Those age-old eyes.