A user group to talk about:

• ASP.NET MVC (or the probably better Monorail)
• TDD, Continuous Integraion and mocking
• Castle IOC, Validation, Dynamic Proxy
• Rhino tools
• JQuery (something which has brought the joy back to JavaScript and a must for Ajax programming).
• Domain driven design (death to datasets and stored procedures)
• NHibernate, Active Record and ORMs in general (probably not the
  entity framework).

Anybody who thinks datasets are a great thing need not apply.