[legion]

I own a set of reverse-threaded tapered drill bits. They are the best thing in the world for removing broken bolts that are flush-or-below the surface. Come to think of it--I bought them because I stripped the adjustment screw on my throttle-body last year. A trip to Sears and an order from Pelican and I was good to go.

The thing that really sucks is when you have to disassemble much more than you originally intended to get the drill in....(and I do own a 90º drill for such occasions).