A couple of Brainy Tools - I: MindManager Pro
I discovered MindManager about 18 months ago and wouldn't try sorting out my thoughts about a project without it now. Good integration with Office and Acrobat (ie it can import and export to Word, Powerpoint etc and export to pdf) and even supports live links to SQL Server databases if you are really geeky. For the average user it is just a highly intelligent blank sheet upon which to doodle - which is what makes it invaluable.
