AutoNav will make a table of thumbnails like that, where each image is a link to a child of the current page.
So if you have a page "My Portfolio" with twelve child pages (pages with My Portfolio as the parent page), and each of those pages has one or more attached images, you can get a page that looks like the "Hellotank" one by inserting the
[autonav display=images] shortcode.
Rearranging the pages' menu-order will rearrange the images in the table; and everything gets updated automatically when adding or removing a page. AutoNav was updated to understand WordPress 2.9's "Post/page thumbnail" or you can override.