Via the Trendmatcher weblog I came across a nifty tool to use the Google Maps viewer for arbitrary images.
The Google Maps Image Cutter, as the application is called. Is a small Java application which cuts a selected image to thousands of small images compatible with the viewer and a working HTML file.
Really useful for embedding your favorite diagrams (this is diagram I generated for a legacy MMBase application) in a blog post:
Now… the only wish I still have is the option to just use .dot (graphviz) files or a vector graphics format directly 
Nice! Even though its a bit silly that the image wraps horizontally.