I was recently called in to help out with a Drupal powered website that was in the late stages of development.
It's a really well designed corporate website made really easy for the
editors to add information about new projects, partnerships, news and so on. These elements are automatically cross-referenced and appropriate articles highlighted on the home page.
One aspect of the design that stands out is the careful use of fonts, implemented with the sIFR [1] technology which means that headings on this site are created automatically in the right font without having to call in a designer.
Unfortunately I can't provide a link as the site content hasn't all been written yet but here's an anonymous and blurry screenshot anyway.