We looked at Silverlight Deepzoom sometime ago. We even met with the developers that were working on this BBC Deepzoom 'big zoomy photo thing' at a VBug talk in Bracknell. Though we weren't shown any of this code we were given a great demonstration.

It seems that alot of people are interested in this, strangely this post here also looks into another Deepzoom showcase that we had used as a demonstration of the exciting things you can do with this technology.

I'm just trying to spread the Silverlight word!!