Whilst browsing through images tagged with “hitchcock” on Flickr, I came across this image by Paul Szynol:

My initial reaction was “that’s a cool scale model” and then I started reading the comments… my mind boggled when I realised it wasn’t a model, but a real photograph that’s undergone a process called “tilt-shift” (which is something I’d never heard of before).
According to Wikipedia:

Tilt-Shift Miniature Faking is a process in which a photograph of a real location or object is manipulated so that it looks like a photograph of a scale-model miniature. By distorting the focus of the photo, the artist fools the eye into believing that the distances in the photograph are much smaller than they really are.

A search on Flickr brings up hundreds of other tilt-shifted images, and I couldn’t resist having a go myself (a quick Google search show you how):

(the original image is here)