Enable / disable session state per controller / action method
This is now moved from Futures into MVC3. There's a ControllerSessionState attribute (apparently will be named SessionState for the final release of MVC3), which can be applied to a controller, something like this:
[SessionState(SessionStateBehavior.Disabled)]
public class MyController : Controller
{
...
(But in the RC version, you must use ControllerSessionState
This is included in MVC 2 Futures. See http://blogs.msdn.com/rickandy/archive/2009/12/17/session-less-mvc-controller.aspx for more info.