[ygra]

It gets rid of excessive nesting when you need multiple resources allocated after another (e.g. SqlConnection, SqlCommand, etc.). You can do

        using (handle a = new handle(0), b = new handle(1), c = handle(3)) {
            // use a, b, c
        }

instead, too, but that obviously only works with equal types.

I'm usually not a friend of too deep nesting (worst thing I've seen in our codebase was 65 spaces deep) and in C# you already have one level for the class, one for the namespace (possibly) and another for the method. No need to add two more if you can help it.

[dkuntz2]

Right, I understand that it removes excessive nesting, but the first example just looked ... wrong to me. Your example with above looks somewhat better.