changeWatch.js

$scope.changeWatch = function(){

  // An alternative to Angular $scope.$watch
  // that does not trigger on initial load

  var 
    init = true,
    args = [].slice.call(arguments),
    listener = args[1];

  args[1] = function(){
    if(init){
      $timeout(function() { init = false; });
      return;
    }
    return listener.apply(this,arguments);
  };

  $scope.$watch.apply($scope,args);

};