PocketWizard has just released a major firmware upgrade for its Plus III and Plus IV triggers (more to come) that you absolutely want to check out. It's called "E Release," and it more than doubles the working range and the number of channels that your PocketWizard radio trigger is capable of.
For her Twins Project, French photographer Julie de Waroquier spent the summer of 2011 shooting surreal, symmetrical, and square portraits of identical twins.
Upon first glance, the photograph Double by photographer Katsuhiro Saiki might look like some sort of abstract modern painting of a blue canvas divided by a thin white line. Look a little closer, and you'll find that it's actually a photograph of the sky divided neatly in half by an airplane vapor trail.
For those of you who still shoot film and are adventurous, have you tried double film photography? Flickr user Chuck Miller stuck two 35mm Fuji 200 films -- one normal, one redscale -- into a Holga 120N and shot the films simultaneously to get these unique sprocket hole, layered photographs.