Ya i'm not using notepad because i want some syntax colors, indenting, and line numbers. I guess i'll keep with notepad 2 unless someone knows something better.
Vim - but takes some getting used to since it has a lot of shortcut commands. It's also the rival of Emacs.
When I wrote my big Perl projects, I used sciTE since it has tabs and allowed me to use my favorite programming font. It's a very good programmer's text editor - you can even execute the code from within the editor, if I remember correctly.
Right now I'm getting into Eclipse with the Perl plugin, but that's way more involved and requires a huge download.