Dorothy is a child theme based on the lovely free WordPress theme known as Mantra. Nothing radical is going on here; this is pretty much all Mantra, except that I was dead-set on a one-column, no-sidebar layout for all pages except the Blog page, for which I wanted a two-column, sidebar-on-the-right layout, something that was only possible with a child theme.
I also modified the existing index.php template (the one responsible for the Blog page) so that it would display the page title, just like any other page.
Now that I have Dorothy, who knows… the possibilities!