The Microsoft Platform Evangelism team released a very nice technology demo product to show all the new cool technologies Microsoft just released or is going to release during that year.
The demo utilizes several technologies including: IIS7, ASP.NET Ajax Extensions, Linq, Windows Communication Foundation, Windows Workflow Foundation, Windows Presentation Foundation, Windows Powershell, and the .NET Compact Framework.
They are developing the demo on CodePlex, so you can download the code directly from there.
The also build a web site DinnerNow.net, that will contain a working demo, and will host videos showing the features of the "product". At the moment of writing there is just one video, that explains the end-user experience, from when the user browses an Ajax based website, register and buy using a CardSpace identity, and then tracks his order using a Vista Gadget.
Looking forward to see the second episode.