Last summer, I had planned to use June to rewrite the Vermont.NET website in ASP.NET 2.0. But then came a project that I don't like to talk about any more. (Really, it's not the technology I dislike, just that it ate my summer and I'm still holding the grudge.) So I am finally doing the VTdotNET site now. I have spent 3 years playing with .NET 2.0, but focused on the backend, the lower tier, the BCL, etc, and not the UI stuff.
Now that I'm doing this site, I wanted to try to get my hands on as many of the new key ASP.NET 2.0 toys as I can.
Here's some of what's already incorporated in this site (with links to how you can learn more about each technology)
I'm still fiddling with it. Actual design (how it looks) is the hardest part for me.
I hope to make this live within the week and will come back to this post to make note of it.
Throughout the site, I have placed little question mark icons
which the user can hover over to get a popup explaining what new ASP.NET 2.0 technology is being used.

This is done from a combination of javascript and css that I was able to get started with thanks to this Code Project article.