Sony Ericsson already have a superb Xperia X10 virtual simulator for those wanting to see what the UI is like, but if you want to see a live example of Timescape in action then head over to XperiaXTen.
The site basically consists of an Xperia X10 being streamed live in real time running Timescape. You can send a message via facebook, twitter or email and the message should be displayed in real time on the X10’s display. Funky. Check it out here.