A little while ago, i was visiting Barack Obama's site and found the gallery in the home very interesting.
After trying to copy it to Mootools, found that Devthought has done so.
All i did was chance a little the script and make it as a wordpress plugin, with admin control of the items.
You can check and download it here:
Also you can see it live at the main index of the blog
As i talked with the author, on the 2.0 version we will be making it change by itself the items, and maybe some more integration.