I've been experimenting with some dual-monitor VGA hacking and synchronisation visuals.
Read the tutorial here.
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muenster, germany
Thanks for your tutorial little-scale! It helped me to build my Arduino based VGA GlitchBox.
Read this post for some information about the Box itself.
And here is a video of the prototype I built a few weeks ago.
Last weekend I had the chance to use the GlitchBox on a party organized by some friends. Seven monitors were put into the dj desk. A video will follow soon 
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Milwaukee, WI
So cool, I really need to get around to building it eventually. Problem is I need a VGA source!