Sorting a Multi-Dimensional Array with LINQ

In Sorting a Multi-Dimensional Array, I showed how to use the IComparer interface to sort multi-dimensional arrays--something that the built-in Array.Sort method can't do. That article was written several years ago, before the introduction of generics and before LINQ. Whereas it's easy enough to modify the example code so that it works with generics, getting LINQ to sort those arrays seems to stump some people.