National Computational Infrastructure
For the National Computational Infrastructure I used Plone as the CMS. I designed the logo and artwork around the orange spiral (on the right above) which was the dominant feature of NCI's predecessor's logo.
The banner occupies the entire width of the browser window, with the thick part of the curved orange underline extending as required. The image on the left of the page is an upturned Alpha CPU.
NCI provides high-performance scientific computing resources trough its National Facility. I adapted the NCI artwork for the National Facility web pages, which are a mixture of static, PHP and Python generated pages.
Plone is probably the best engineered CMSs, but its hosting requirements are greater than those of Drupal and Joomla, and the learning curve for theme developers is steeper.