Many time we required to get current controller or action name or module name. Its very easy job to get get route name, module name, controller and action name for magento from current URL, anywhere in controller or even with template files.
Mage::app()->getRequest()->getControllerName(); // return controller name
Mage::app()->getRequest()->getActionName(); // return action name
Mage::app()->getRequest()->getRouteName(); // return routes name
Mage::app()->getRequest()->getModuleName(); // return module name