The aesthetic of the site is clean and organized. The visual cues led me to suggest a highlight/filter style of navigation/organization.
This is an example of the filter style of organization. When a category is clicked work that is in that category is highlighted and work that is not is greyed out and the links are disabled.
For the interior pages we let Gillian's work do the talking. A brief explanation of the piece with heavy use of images ... the drop shadows are automatically created and dynamically sized using CSS.