Several of the TUAW bloggers are fans of David Allen's Getting Things Done. There are also a couple of Newton fans among our numbers (myself included), so it's inevitable that the two would come together.
Eckhart Köppen took it a step further and described the evolution of his Newton GTD system, from the very start to his detailed solution. With simple applications like DateMan, Super NotePad and More Folders, Eckhart has constructed a nice solution for his Newton.
Thanks for posting this, Eckhart! I'll try it myself.