Having been recently looking at 3D stuff with WPF this was an interesting investment that we've just made with EON in California. Take a look at the press release and http://www.eonreality.com/video/touchlight/touchlight.wmv for an introduction to 'Touchlight...

Just going through my email backlog and realised that I'd missed a great opportunity to give while I search. If you use www.clickscount.co.uk as your search page you'll be donating to the NSPCC as you go. Got to be worth a go!