It’s a great little series of photos, but this one takes the cake: the emergency “off” switch that can’t be activated. Well, looking at the photo closely suggests that if you used a Phillips-head screwdriver you could remove the acryllic casing… but not in time to prevent the explosion.

If you like button and switches and every other “simple” interface, you’ll definitely want to take a look at the History of the Button blog. Bill spoke at the Adaptive Path UX Week in August, but I missed his presentation. Now I’m hooked on his blog.