mikejuk writes: This is more than an air guitar — it's a fire guitar and it's the most dangerous, but most impressive, Arduino project encountered to date. Take one Guitar Hero controller, an Arduino, some code and a lot of pipe work and you have... well watch the video to see.
Today's scientific question is: What in the world is electricity?
And where does it go after it leaves the toaster?
-- Dave Barry, "What is Electricity?"