My basement (and future site of my home theater) is mostly underground with a door in one corner where the lot slopes down. The inner part of the space is already framed around the stairs and I will be framing against the perimeter block walls. Most of the HT contruction photos that I've come across on the web have had conventional framing done against block or poured walls. But the friends and family that I've consulted with on this project have all suggested nailing the studs directly to the block "face down" as opposed to normal framing where only the edge of the stud is against the wall. When I inquired about insulation, the reply was "What insulation? You have the best insulation going - you're underground.". Nailing the studs directly to the wall would certainly be easier, but I want to do it right if that isn't the proper way. Opinions?