It's been a lot longer in coming than it should have been, maybe, but it's here finally: The menuing extension for TurboGears. This extension gives TurboGears developers the ability to stop looking for where their controllers are set, how to integrate new controllers into their navigation menus, etc.
All of that goes away. Now you can just use simple functions and decorators to generate your menus for you. As it also uses jdMenu, you get dynamic menus that are very suitable for a web application.
If you're a TurboGears developer, you owe it to yourself to check it out today.