"Photo Grandpa" aka Fotoopa (that's photograndpa in Dutch) has created an amazing laser rig for ultra-high speed photography.
"His setup includes his own custom shutter—which can fire at five microseconds—made around an Arduino controller and custom aluminum parts, extra lenses to search for insects in focus, and a reflected laser light system that allows him to move around anywhere to shoot his photos. The rig can work in broad daylight or total darkness, and it doesn't need any setup except adjusting the sensitivity of the lasers depending on the ambient light. The whole thing is self-contained.
The focus range detector works from 1mm to 700mm from the camera, and the firing mechanism is capable of detecting flying objects two millimeters in diameter."
Check out some of his work below (to view all, visit his Flickr page).