Below is a function defined in my Bootstrap class. I must be missing something fundamental in the way Zend does routing and dispatching. What I am trying to accomplish is simple: For any request /foo/bar/* that is not dispatchable for any reason try /index/foo/bar/. The problem I'm having is when the FooController exists I get Action "foo" does not exist. Basically, the isDispatchable is always false.

public function run() {
        $front = Zend_Controller_Front::getInstance();
        $request = $front->getRequest();
        $dispatcher = $front->getDispatcher();
        //$controller = $dispatcher->getControllerClass($request);
        if (!$dispatcher->isDispatchable($request)) {
            $route = new Zend_Controller_Router_Route(
                ':action/*',
                array('controller' => 'index')
            );
            $router = $front->getRouter();
            $router->addRoute('FallBack', $route);
        }
        $front->dispatch();
    }