Welcome back Big. That theater you posted is truly beautiful. Too bad you don't live out here in Hawaii, I wouldn't mind paying some consulting fees when it comes to the detailed woodwork while still trying this as mostly a DIY project.
Great discussion all. I'm not worried regarding the wall studs holding the weight (there is actually very littel weight on that wall), so I just followed the diagram from Kinetics. All the extra weight on the hat channel is a concern but I won't reopen that discussion again. I will say that the 22 gauge is still quite flexible, especially at any length. As the one writing the checks for everything it comes down to peace of mind knowing this whole thing won't collapse. As far as Kinetics goes; they've been quite helpful and easy to work with and I wouldn't hesitate buying from them again (they were also willing to endure lots of questions from this enthusiast). Here is one of their diagrams:
To answer some other questions; yes, the studs are 16" on center..... yes, I am going with slightly more clips than the minimum on the chart above. By the way, Kinetics has all their info on this in this very helpful PDF: http://www.kineticsnoise.com/arch/pdf/isomaxinstall.pdf
The ceiling is a different story. Even though it seems some of you work with 25 gauge often, I am still concerned about the weight on the ceiling. Not only will the clips be offset but I plan to use many more than the minimum there as well (I'll use more than the minimum any place that something will be anchored to (large tv, speakers, projector, star ceiling). In the areas that have less weight they will be spaced 48" width and 24" high per the maximum rec's on the diagram. You actually can't see all the clips due to the poor pic from my iphone but there are some on the edges that are already spaced at 48".