Thanks... but Barna has some bizarre definitional issues. For instance, no Catholic believes in the bible according to him (/it?). For international figures, especially the third world, there's not much better than Barna, but I stay away from him on domestic stuff... waaaaayyy to strong of an agenda (that being that we're all going to hell in a hadnbasket).
Barna is very strict evangelical and even a lot of evangelical Christians would not pass the Barna criteria of "what is a Christian?". I would imagine Catholic and mainline Protestant churches (especially Anglican/Episcopal and Lutheran) would have issues with Barna at the definitional level.