Side scroller - rotate object towards player.

I am working on a side-scroller - movement is restriced to the x and y planes. I’ve looked in several places on different forums and can’t find a good solution - I have a cylinder-like object that I want to point at the player at all times. I’ve tried several things but nothing keeps movement/rotation to the x and y planes. Any help is greatly appreciated.

Try using this script:

var Player : Transform; // probably assign this in editor
 function Update(){
  var point: Vector3 = Player.position
  point.z = 0.0;
  transform.LookAt (point);

And here's an explanation on how "transform.LookAt" works: