http://www.scintilla.org/
SciTE
*
works on windows and linux
* Syntax highlighting
** Existing presets for about 30 prog. languages

* Block tabs
* Block Commenting (can choose comment char for each language, but comes with it preset to the correct char by default)
* Source code available
* Collapsable functions and Conditionals (YES! finally found one with this feature

)
I originally got this editor when I downloaded Ruby (very cool language!) but been playing around with it and I really like it

It includes a preset for VBScript so I'm starting to use it more.
The only thing I don't like about it, is the configs are all text files, which is good because its more universal... however it would be nice if they had some sort of GUI because there are a LOT of options available and it takes awhile to scroll through the config.
Other thing that would be nice is if it was an MDI.. *shrug* can't have everything