One frame of the Overlook Hotel from The Shining along with Kubrick's detailed storyboard for the shot, which includes (among other annotations),

In order to accurately get the
central path curve, you have to
set up the shots and put stakes
in the ground so that the curve
as seen through the ground
glass corresponds to what is
drawn. THERE IS NO OTHER WAY
TO DO IT REPEAT NO OTHER
WAY exercise the greatest
care as the compositional
effect of a different path might
be BAD BAD BAD

[via Daring Fireball]