function Start () {
    // Use the Specular shader on the material
    renderer.material.shader = Shader.Find("Specular");
}

function Update () {
    // Animate the Shininess value
    var shininess : float = Mathf.PingPong (Time.time, 1.0);
    renderer.material.SetFloat( "_Shininess", shininess );
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void Start() {
        renderer.material.shader = Shader.Find("Specular");
    }
    void Update() {
        float shininess = Mathf.PingPong(Time.time, 1.0F);
        renderer.material.SetFloat("_Shininess", shininess);
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def Start():
        renderer.material.shader = Shader.Find('Specular')

    def Update():
        shininess as single = Mathf.PingPong(Time.time, 1.0F)
        renderer.material.SetFloat('_Shininess', shininess)