Just saw this on a Google blog. Don't know any more about it than what is listed here, but it looks interesting nonetheless. Link has video of the software in use...
http://blogoscoped.com/archive/2008-02-25-n64.html
Bryan Burkholder released a software for Windows Mobile (note: it requested newer files of the .NET framework on my phone...) called
Google2Go, used to quickly access different Google services. Bryan says, “the reason I wrote this app was I really like the Yahoo! Go application, and wanted somthing similar for Google products ... I think the UI is easier to use, and the application is quicker than using [Internet Explorer]. And the application requires less page loads than IE, which potentially could lower data cost (if the user pays by MB or whatever).”