I had a quick play with with the (relatively) new Zoom.It site from LiveLabs ( click the image );

If you visit the site, you can point it at any image on the web or any website and create a DeepZoom from it.
I visited, entered my URL and it created me this one.
There’s a decent write-up over here with a working embedded example;

and it all seemed pretty neat to me but what I wasn’t sure of was whether you could do that without first visiting the site and entering the URL in order to get some embedding code for a specific pre-determined URL.
As an aside, I also didn’t want a script block because it causes me pain to embed that via my blog whereas I’ve already gone around the pain of configuring the thing to let me embed object tags.
There’s both a Silverlight and a JavaScript SDK so I took the Silverlight one and built a quick XAP which takes an initParam specifying the URL to be DeepZoomed and then it uses the SDK to call out to Zoom.It and get the corresponding DeepZoom generated dynamically and displayed.
This may already be there on the site via some fancy JS embed – I didn’t hunt it down.
So, this one for Microsoft.com below is embedded with something like
<object type="application/x-silverlight-2">
<param name="source" value="http://www.mtaulty.com/downloads/SLZoomIt.xap"/>
<param name="initParams" value="uri=http://www.microsoft.com" />
</object>
which causes us to go and get an image for Microsoft.com