I was just installing the amazing 3D photo browser PicLens on my web site's photo galleries and started dreaming of being able to use it my Serendipity blog too. But it uses a static Media RSS feed, which would have to be updated every time I post new pictures, which becomes a huge task.
I noticed that PicLens has a blog plugin available for... the other guys.

For reference, here's the link to my PicLens-enabled galleries, but you need to have the PicLens browser plugin installed to view the full effect...
http://www.photo-xposure.com/southafrica2.htm
Cheers, Vince