I am happy to provide a .zip of the base theme this site is using, called SFII. It is based on the Solar Flare II theme provided by the Mambo CMS. It is available here, in the download section.
To create a nifty menu like I have on the left, use an unordered list of links in a div id="menu-container". The stylesheet takes care of the rest:
<li><a href="http://www.example.com/blog/">My Blog</a></li>
<li><a href="http://www.example.com/gallery/">My Gallery</a></li>
Finally finished up the Serendipity plugin[?] I cobbled together last week. This is a markup plugin to put Gallery images into blog posts easilly, like this:
using syntax like this:
[GImage caption=New African Pavilion at the Calgary Zoo; style=fancy; size=thumb; link=image]summer05trip/IMG_0542[/GImage]
Usage, examples and the zip are here