simple script for my Recursive Reality class to make things with

LookCast.cs

using UnityEngine;
using System.Collections;

// DIRECTIONS FOR USE:
// put this script on ForwardDirection gameObject in your Oculus camera rig

// it will automatically call a function named "functionToCallOnLook"
// on every script component on that object (the object needs a collider too)

public class LookCast : MonoBehaviour {

	// defined in inspector; this tells the raycast which collider layers will trigger it
	public LayerMask raycastMask;

	// defined in inspector; type the name of any function, without parentheses, e.g. "OnLook", NOT "OnLook()"
	public string functionToCallOnLook = "OnLook";

	// Update is called once per frame
	void Update () {
		// setup variables required to fire a raycast...
		// "ray" tells Unity where the raycast starts (origin), and which direction
		Ray ray = new Ray( transform.position, transform.forward);
		// "rayHit" is a temporary variable to help us remember which gameObject we looked at
		RaycastHit rayHit = new RaycastHit();

		// this fires the raycast; a raycast will trigger only one collider at a time
		if ( Physics.Raycast ( ray, out rayHit, 1000f, raycastMask ) ) {
			rayHit.transform.SendMessage ( functionToCallOnLook, SendMessageOptions.DontRequireReceiver );
		}
	}
}