I just read on OSNews that the new OOo Suite will feature native "Aqua" (which I'm assuming is an acronym Cocoa) UI. This might be something worth looking into. I first read about it a few months ago, but wasn't sure if it was true. The article pointed to by OSNews is: http://blog.gobanquet.com/index.php/openoffice-3-has-pdf-import-native-aqua-ui-tara-reid/ if you want to read more.