Software for writers?

Hi, all! In my slow move to Mac, I'm searching for software that'll help writers with organization, brain-share, idea & character developement, etc. The few references I've seen online are from 2007/2008, and I'm hoping for something more current with a mature workflow. I'm starting a new eBook project, and really want to have it's development to be all Mac: Aperture for image processing/management, text development and design in ---??

Suggestions and links? Thanks!
SteveB

Never used it myself but it looks as if Scrivener might meet your needs.

vansmith, thanks for replying! I'm checking it out now!

Couple other recent threads:

http://www.mac-forums.com/forums/os-x-applications-games/234150-scrivener-technical-writing.html

http://www.mac-forums.com/forums/os-x-applications-games/214383-citations-pages.html