My preferred language is VB, so when I start a new project, that's the language my templates come from. It turns out that I've missed the boat on a great Atlas example because it's in a C# template (so far?).
The ASP.NET 'Atlas' Wiki Web Site is really worth a look. I discovered this great project after installing the Atlas July Community Technology Preview and poking around in VS 2005.
The Wiki Web site should certainly be part of the Showcase.