This is just a tip I wanted to share for Visual Studio 8 that allows you to see half values in the debugger.
Disclaimer: This uses undocumented features of Visual Studio and as such it is possibly dangerous. I have not had trouble with it, but who knows.
In the file, "Microsoft Visual Studio 8\Common7\Packages\Debugger\autoexp.dat", in the section [Visualizer], somewhere after the line "; DO NOT MODIFY", add the code: