Giles Turnbull writes an excellent overview of implementing the Getting Things Done system on the mac called Getting Things Done with Your Mac.

I’ve been working through this system and bending my laptop and my personal habits and getting new tools and testing testing testing testing. I plan to say more about it here in the not too distant future. But I still want to finalize some of how I do things and commit to what I use and how I use it. I’m still double-using some things to make sure that A is really better than B and so forth.