Electric can openers and electric knives are two things I'd just feel plain silly using '~__^
I have a Pampered Chef hand held can opener, and I agree with the above post. It is easy to use, and the edges aren't sharp and jagged like regular can openers. It is one of my favorite Pampered Chef items.
I use the good old Swing-A-Way standard can opener with the plastic (maybe vinal) handles. When I bought it, there was a label that said it was the can opener used on Skylab. So if it's rated for space flight and meets NASA specifications, it's probably ok for me to use opening my canned mushrooms 
BTW: The Swing-a-way really does a good job opening cans.

BTW: The Swing-a-way really does a good job opening cans.
My dad gave me a hand can opener when I moved out and it was the best can opener I have ever had. In fact I still have that can opener 20 years later. It just glides along the edge of the can with little effort in turning the the crank. I think electric can openers are great for people with arthritis in their hands.