PLEASE don't use an electric sharpener (at least of the kitchen type). More knives have been destroyed with them than anything else

KenK recommended a Sharpmaker - they are very very good, but a tad slow if you let your knoves get really dull

An Apex Edgepro is great if you want to spend some $$

A nice set of stones (I have natural Arkansas, Manmade Oil, and manmade Japanese water stones) is a wonderful way to get an edge, but requres some skill - I love the waterstones, and for my woodworking gear, it's the way I go - for normal knives and everyday use, I tend to use the Edgepro, but I'll say I can get a better edge with the waterstones