My cousin Max, who lives in Philly, visited me over Labor Day weekend. We had a real blast -- I think he enjoyed his time in Austin and hopefully I've convinced him to move out here :-)
The photographic technique in the above photo is called a rear-curtain flash sync (also known as a second-curtain sync, which is what Canon calls it. In it, the flash fires twice -- once at the beginning of the exposure (to assist w/focus) and again at the end of the exposure. This means if you have a long enough shutter time, your picture will contain trails/blurs -- like all long exposures do -- but because the flash fires at the end of the exposure, the picture also has at least one sharp image in it. In this case you can see that Max moved his head to the right during the exposure, but because the flash fired at the end (freezing the action for a still shot), the whole picture isn't blurry.
I love this effect -- I also used it here.
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