Don't get me started on electric knives!
Good ones, like the current ones by Black and Decker are WONDERFUL. I bake a lot of "artisan" breads--thick crusts, and nothing better than a good electric knife for cutting them.
They are great for angel food cake, and sponge cake.
Also, a good electric knife is terrific for slicing meats thinly and cleanly, with a minimum of waste.
The one I have, is called the "Ergo," now out of production, but Cooks Illustrated says the successor model is quite as good.
Cooks Illustrated also says that the Cuisinart electric knife is not particularly stellar.
Lawrence/Maytagbear