I use them in a pinch for a lot of things. Soups, salads, all of it. No, of course they are not as good as fresh new potatoes steamed. But many of us grew up with canned vegetables and see them as a vialble alternative to some of the ugly stuff that we buy "fresh" in our grocery stores when it is .... well, like it has been now. We hadn't seen freezing in well over two weeks. Eating everything fresh in season isn't really an option, and that can of potatoes looks ok sometimes.
German potato salad would be my choice, toss it into some home-made bean, lentil, or pea soup.