I've heard of at least one fairly extreme solution to this problem. If you are confident in the quality of your home wiring, you can run a lead from the third prong of an outlet to an alligator clip that you would attach to your bridge. Obviously, this would work better in a recording situation than a live setup.
I've played though vintage Fender amps for as long as I've been playing, and they almost always have a three-way grounding switch for which I've learned to have a healthy respect. The right setting means no popping when I touch the strings, but in the wrong setting, I've had a fair taste of 60hz zap. Location and age of the venue has made a huge difference. I'll take a little bit of popping over the outright sizzle any day.