Perl hackers ahoy: CamelBones is a set of bindings between Carbon and Perl on OS/X. As the blurb says:

CamelBones is a framework that allows many types of Cocoa programs to be written entirely in Perl. It also provides a high-level object-oriented wrapper around an embedded Perl interpreter, so that Cocoa programs written in Objective-C can easily make use of code and libraries written in Perl.

Find it here: http://camelbones.sourceforge.net/.