NotePad++ for Windows (
SF.net Link)
I use Fireworks to do my layout/editing, but dedicatedly use notepad for the actual HTML/PHP/ASP/JS. Before I started using CSS-based layouts, I was using Dreamweaver, but it's preference towards users who use tables instead of CSS has made me move away.
Besides, only people who need to use Dreamweaver's predictive tags use dreamweaver :p