Not sure if this would help but I thought I'd add it to the discussion. I've been working on a Wii Nunchuck library that I could simply include in my programs without adding tons of code to the bottom of each file. You can check it out here:
svn.chrisgilmer.net/viewvc.cgi/project/arduino/libraries/WiiChuck/
It's simply a reorganization of Todbot's code as a C++ library. I haven't finished it yet, but you're welcome to use the code. It works with my Duemillanove and 0017 on my Mac with Snow Leopard.