// Prints the name of the collider this transform collided with
function OnCollisionEnter(other : Collision) {
print("This collider collided with: " + other.contacts[0].otherCollider.name);
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void OnCollisionEnter(Collision other) {
print("This collider collided with: " + other.contacts[0].otherCollider.name);
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

def OnCollisionEnter(other as Collision):
print(('This collider collided with: ' + other.contacts[0].otherCollider.name))