What tools (software, dead tree, or otherwise) to record information about your campaign?
Myself, I use PCGen for PCs/NPCs. While there are some bits I'm not tickled about, I do love how flexible it is, and how easy (compared to anything else) it is to customize the data. I use the GMGen tool to track initiative, too. That's another feature that kinda sold me on it. That said, I'd love to find something even better.
For maps, I use a combination of hand-drawn and CC2-Pro. I'm finally starting to feel like I understand CC2 (now that CC3 is coming out), so I'll probably be using that more and more. Even my hand-drawn maps, though, I've started scanning in, just for storage.
Adventure/campaign outlines, etc. are stored in Word, as are most house rules. Really, though, this is an area that I'm horrid at doing. Every time I try to put together a compilation of house rules, I never seem to be able to properly organize things. Ditto for the majority of campaign notes. What I have, I have in Word, but I'd love to hear a better tool or a template.