Well, somehow or other, I always manage to start tripping breakers.  And when it happens with my hand on a large power tool, it startles the CRAP out of me.  I always think something is blowing up.  This time it was my 14" chop saw, which I was using to cut through a 2x6 piece of wood, lol.  It was bogging down a bit because the blade is made to cut through metal, so I could hear it struggling, making all KINDS of smoke from the wood, then BANG, no power.  I'm gonna go check some life insurance quotes before it's too late, because one of these days it's gonna be bad.