Google App Engine

Google reveiled their new service, Google App Engine. It provides a web framework (Python only currently, but it's supposed to be language neutral, so Ruby/PHP may follow). They appear to provide a pretty complete framework including templating and data storage. 

The idea is you develop locally and then simply upload/synchronize it with your online account which essentially deploys the application on Google's servers.

The following movie probably explains it a bit better:

Unfortunately all developer accounts are currently taken. I'm really curious to see how this really works, how they secure their systems, what storage and ORM is really used, what's available, and so on. An interactive python interpreter service shouldn't be too hard to write ;)

The online documentation already reveals some of the details and of course, you can download the SDK and work locally.

 
Also, Turbogears people are already looking into supporting Turbogears on the Google App Engine.