@bakura10 There's also 'controller_plugins' :)

@Ocramius I want to agree (makes things easier for end users to have one key) but it breaks naming convention for other service-managers (`ControllerManager` -> 'controllers', `ControllerPluginManager` -> 'controller_plugins' in `ModuleManagerFactory`) and various configurable services (`Router` -> 'router', `ViewManager` -> 'view_manager').