The transform that was hit by the controller.

	// print the transform's name that collided with this transform
	function OnControllerColliderHit(hit : ControllerColliderHit) {
	 	Debug.Log("I'm colliding with: " + hit.transform.name);
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void OnControllerColliderHit(ControllerColliderHit hit) {
        Debug.Log("I'm colliding with: " + hit.transform.name);
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def OnControllerColliderHit(hit as ControllerColliderHit) as void:
		Debug.Log(('I\'m colliding with: ' + hit.transform.name))