Get That Broken Bulb Out Of The Socket

Before you jam a potato into that broken bulb, take a look at the Bulb Base-Out tool — you insert it in the broken bulb base, twist the base of the tool, and then twist the bulb out. I never had any luck with that old potato anyways.
The Bulb Base-Out’s magic is in the fingers at the end — they expand when you twist the base so they can grab the inside of the broken light bulb. Strategic Insight makes the tool from non-conductive plastic so the danger from shock is minimized.
You can get the Bulb Base-Out directly from Strategic Insight for $5 — any tool at this price is worth giving a shot.
Bulb Base-Out [Strategic Insight]
looks like a neat solution.
here is an alternative:
http://www.amazon.com/Bayco-Broken-Bulb-Extractor-LBC-800/dp/B000GATBX6
Turn the power off and use needlenose pliers.
Site has broken links, impossible to order from.
Step one is turn the power off.
Step two is determine if the power is really off because it is on a four-way switch and you never got around to labeling the breakers.