Lasagna Code

http://lispian.net/2011/11/01/lasagna-code/

What is the best ASP.NET MVC Open Source forum?

No answer.
There is one for WebForm 
http://yetanotherforum.net/

The Balanced Developer

http://www.viget.com/extend/the-balanced-developer/

How to get current Windows Logon user if authentication mode in web.config is set to Forms in MVC?

Request.ServerVariables["LOGON_USER"]

References:
IIS 7.0 Two-Level Authentication with Forms Authentication and Windows Authentication
http://mvolo.com/blogs/serverside/archive/2008/02/11/IIS-7.0-Two_2D00_Level-Authentication-with-Forms-Authentication-and-Windows-Authentication.aspx

Mixing Forms and Windows Security in ASP.NET
http://msdn.microsoft.com/en-us/library/ms972958.aspx

How to use jQuery in Orchard CMS modules?

On the top of cshtml file put following code:
@{
    Script.Require("jQuery");
}
@using(Script.Foot()) {
    <script type ="text/javascript">
    //<![CDATA[
        $(document).ready(function () {
            alert('page loaded');
        });
    //]]>
    </script>
}