I was just talking to Todd and helping him a bit with some ModelGlue development. He was talking about doing some testing of ViewState values. I mentioned he should use the getAll() method of the viewState. If you want to quickly see what is available in a view, just drop this line in:
<cfdump var="#viewState.getAll()#" label="The Whole Enchilada">
I use this all the time when working on a Model-Glue site.