The Neoclassical WordPress theme is, surprisingly, one of the only available standard 3-column WordPress themes with tasteful typography and layout. If you are looking for a free version of the Thesis WordPress theme, the Neoclassical theme by the same designer appears to be a precursor of Thesis and a fair approximation of its 3-column layout option.
Here is an example of a site using the Neoclassical WordPress theme:
