I really like to use ActiveRecord when building small apps or internal tools. It offers a lot of great features of his older brother NHibernate, without freightening everybody on your team.
I also really like the ability to generate the database schema based on the domain entities, so you don’t have to worry about SQL and [...]

There are places where we are still stuck with .net framework 2.0 – so WCF is still not available. I’m currently working on such a project.
I’m using asmx web services, and i needed to be able to export the wsdl file generated by the framework, as part of an automated build.
It turns out that it seems [...]

Really interesting presentation about a concurrency in the .Net world :
MindTouch @ Monospace: Going Concurrent & Keeping your Sanity « MindTouch Developer Blog.
I should take the time to explore the MindTouch Dream framework.