An interesting article on Lifehacker about a web site called, TiltShiftMaker, that is allows you to upload your images and then add a photographic filter to it that simulates tilt-shift. What this does is to make those landscapes appear to be miniatures. Here’s my sample of a photo of Waikiki harbor:
It almost looks like those cars are just miniature toys. Of course, your images might be even better. The site has some great examples on their flickr account.
To really see this effect better check out these Keith Loutit’s videos on Vimeo.