Hi,
I decided to scratch a small itch this morning, so now I have a (very basic) Zope bundle which will do some syntax highlighting on plain DTML documents and ZSQL methods. More information and a download can be grabbed here: http://woss.name/2005/10/19/zope-bundle-for-textmate/
It'd be nice for the bundle to wind up in the svn repository sometime, but unless somebody's daft enough to give me write access to it in the repository, it'd probably be better to hang off until I've got it into better shape...