Insulation, Radiant and Vapor Barriers - Efficients way to insulate a basement?

I have been asking every one I know what the best way to insulate a basement is. I have got so have different responses and am really confused now.
This is one method someone mentioned to me that I thought was strange.

"2x6 studs with 3 " Poly urethane spray foam and rated R6 per inch
and then a 3 " layer of SM rigid board
then with vapor barrier and drywall will give me an R value of 35 for the wall"
:confused:
Can anyone help me me with this? What are some effective materials I can stuff in my 2x6 wall? My neighbors cat is gonna go for sure. :P
I would like to figure out what would be the best way to insulate my basement wall. It is an 8 inch concrete wall with very little moisture problems.
Please let me know.
Cheers,
Matt

I have recently spent a long time reading about this and just updated my thread today in the basement sub forum about this.

First, you don't need an R35 basement insulation unless you are in Antarctica, that is severe over kill. There is debate over what to do but virtually all I'm reading now from more recent sources says forget the vapor barrier. Put rigid insulation up directly against the concrete wall, then put your studded wall up and you can fill that with batt insulation if you need.

I am still waiting on a decision on mine, though... if you're in a northern climate or canada this is what I'm talking about above. For those in the south I've been ignoring what the advice is since i don't plan on moving my house down there.

Hi Matt. Here are a couple of links with some information on insulating basements.
RR-0202: Basement Insulation Systems — (http://www.buildingscience.com/documents/reports/rr-0202-basement-insulation-systems/view?searchterm=basement)
RR-0509c: Renovating Existing Basements — (http://www.buildingscience.com/documents/reports/rr-0509c-renovating-existing-basements/view?searchterm=basement)

Bud