Aptana's nice too
It's free and available as a standalone editor or as a plugin for Eclipse.
The fact that it's written in Java might be a turn-off to some.
I will admit that CSSEdit looks extremely sharp. Let us know how it works for you.
Rube: You like spaghetti, George? I like spaghetti. I like board games. I like grabbing a trifecta with that longshot on top. That ozone smell you get from air purifiers. And I like knowing the space between my ears is immeasurable. Mahler's first, Bernstein conducting. You've got to think about all the things you like and decide whether they're worth sticking around for. And if they are, you'll find a way to do this.
George: And what if I don't?
Rube: Then you go away, and you don't get to like anything anymore.
- Dead Like Me