ActiveState has released version 4.0 of their Komodo IDE, which supports multiple languages (Perl, PHP, etc), including TemplateToolkit. It has tons of other features, including vi key bindings and extensive configuration options to make it bend to your will. I've been playing around with the betas for the last few months and the new excitement for me is the capability to edit files remotely over SSH.
They also have XPI support, so we could develop add-ons much like those for Firefox & Thunderbird.
I was surprised that my fellow folks on #cgiapp haven't heard about it, so I wanted to share its goodness here. They also have a free version with some functionality stripped out. If you're using some other editor (Crimson Editor, jEdit, etc), Komodo (Edit) is definitely worth your replacement consideration.
Anyway, enough shilling for now.