LINQPad.net - So Great! <repeat /> So Great!

I just got a tweet (follow me @ScottCate) from @SilverlightNews, about LINQPad.net, so I decided to check it out.
Jumping on the site - I see that this is a LINQ to SQL Windows App, that let's you write LINQ statements and execute them directly against SQL server, in a UI that resembles SQL Server Management Studio.
Then I see a bunch of samples built into a panel on the bottom left. These are pretty cool samples, and they execute right in the UI.
Finally, it hits me. This is the companion product to C# 3.0 in a Nutshell.
From the LinqPad.net site.
LINQPad is also a great way to learn LINQ: it comes preloaded with 200 examples from my book, C# 3.0 in a Nutshell. There's no better way to experience the coolness of LINQ and functional programming.
Had I noticed more than the nice screen shot on the home page, I might have noticed the blaring ad for the book on the home page.
I think this is great. So Great! What a great idea!
Build a very useful community application, using the technology he's written about.
Congratulations Joseph Albahari - What a great idea, a great job, and a great execution.