[Califreak]

I use this to open jars

[nascarnation]

The grabber that fits on the bottom of your cabinet is even better.

[Mr. K]

a good leather belt and a paint stir stick wil open any jar- wrap the belt around the lide, wedge the stick into it, wrap the other end of the belt around the other end of the stick, place it on the side of the table and push down (like a lever) and viola!