This is a project i cobbled together over the last weekend, just finishing it up now. It's a handheld POV device for use when taking pictures with extremely long exposure times (think 10+ seconds). It's just a neat tool for photography.
Link to project: http://randomthingsitinker.blogspot.com/2009/05/light-writer.html
(I'm working on getting a momentary pushbutton or two in there to
A: start the sequence and B: change the sequence to say something else)