you can see all of the scopes on the page using this CSS selector
.ng-scope { border: 1px solid red; }
and all of the bindings:
.ng-binding { border: 1px solid red; }
You can then retrieve them by converting the DOM element into selector
var selector = angular.element(some_dom_element);
Then use the selector to retrive the scope/controller/injector
var scope = selector.scope();
var controller = selector.controller();
var injector = selector.injector();