how to animate following the mouse in jquery

OK, this works perfectly fine for following my mouse.

//
$(document).mousemove(function(e){
  $("#follower").css({
      'top': e.pageY + 'px';
      'left': e.pageX + 'px';
  });
});
//

And this works great for animating the mouse to a clicked point

//
$(document).click(function(e){
  $("#follower").animate({
      top: e.pageY + 'px';
      left: e.pageX + 'px';
  }, 800);
});
//

But I personally feel that logically this SHOULD work! Coming from my point of view as the webscripter. Amd then my question is, how can I make this work. I want the #follower to try and follow my mouse with a dynamic kind of lagging behind feel.

//
$(document).mousemove(function(e){
  $("#follower").animate({
      top: e.pageY + 'px';
      left: e.pageX + 'px';
  }, 800);
});
//