Just to let you know the main page looks a bit odd in safari 3.2.1 (on OSX 10.5.6), the images in the middle area of the page are justified left while the rest is centered.
The same occurs on Opera 9.63, Safari3.2.1, and Firefox 3.05 on Windows (Vista). But the images are centered on Internet Explorer 7.0.6.
IE is notorious for being non-compliant with web standards. It is best to check on other (better, IMHO) browsers as well.
Aside form that, I like the clean, simple, direct look of the website, and the fact that you can easily navigate to any of the major pages from any page. Simpleviewer works quite well for your site, too (although I prefer to avoid anything using Flash, if possible -- just my hangup).
Good, solid work in the galleries too.