Tilt-shift photograph is defined on Wikipedia as:

The use of camera movements on small- and medium format cameras. In many cases, it refers to tilting the lens relative to the image plane and using a large aperture to achieve a very shallow depth of field. The technique relies on the Scheimpflug principle and usually requires the use of special lenses.

If that made as little sense to you as it did to me, I think the easiest way to explain tilt-shift is to say that you can make a photo of the real world look like it's a picture of tiny models. Tilt-shifting seems to be all the rage right now and there is a lot of cool tilt-shift work coming out as of late. A prime example is this video of a real monster truck race, but that's processed like a tilt-shift photo:

Metal Heart from Keith Loutit on Vimeo.

Pretty neato, huh?

The thing is, I figured that no matter how much I like the tilt-shift style, I'd never be able to make my own since I can't even understand the definition of what tilt-shifting actually is. But since this is the Intarwebs, someone has taken the time to create a website that allows you to take your own photos and make them look like tilt-shifts. The site is called (big stretch on the name here) TiltShiftMaker.com.

Here's an example of what you can do. First, a photo from Tenerife in the original form:

and here is the post tilt-shift version:

Fancy, eh?

Now if I could only figure out how to use this technology to make my feet look smaller in photos...