A tiny MonoBehaviour for Unity3d that makes a sprite look at the camera

FaceCamera.cs

using UnityEngine;
using System.Collections;

public class FaceCamera : MonoBehaviour {

	public bool LockX = false;
	public bool LockY = false;

	void Start () {
	
	}
	
	// Update is called once per frame
	void LateUpdate () {
	    transform.rotation = Quaternion.Euler(
	        LockX ? 0 : Camera.main.transform.rotation.eulerAngles.x,
	        LockY ? 0 : Camera.main.transform.rotation.eulerAngles.y,
	        0);
	}
}