Yes and I love them. I have a set of Le Creuset that my daughter bought me about 6 or 7 years ago and have used nothing but these pans since. They are marvelous and you don't have to use high temps to get them to cook. In fact, it is recommended you never go above medium heat and they truly do work. Clean-up is a breeze, too.
I also have a couple of cast iron dutch ovens for making soups or stews which are marvelous - one is Martha Stewart's collection and it works both on the stove top and in the oven - and a couple of old fashioned cast iron skillets that I use for making all kinds of great things in the oven like apple pancakes, cornbread, etc.
I have a friend who cooks with all the above over the campfire and they work great!