Tilt-shift style photography. Some examples here. I love the effect of miniaturising vehicles and people, combined with the enhanced colours. From top to bottom: Sheffield, Hastings, Dartmouth and the Albert Dock in Liverpool. Thanks to Danny Nicholson via TWITTER for tipping me off to the TILT SHIFT MAKER site, which produces a 'tilt-shift style' effect on your own photos by giving you a simple interface for deciding which bit of the photograph to keep in focus.