function Update () {
    // Animates main texture scale in a funky way!
    var scaleX : float = Mathf.Cos (Time.time) * 0.5 + 1;
    var scaleY : float = Mathf.Sin (Time.time) * 0.5 + 1;
    renderer.material.mainTextureScale = Vector2 (scaleX,scaleY);
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void Update() {
        float scaleX = Mathf.Cos(Time.time) * 0.5F + 1;
        float scaleY = Mathf.Sin(Time.time) * 0.5F + 1;
        renderer.material.mainTextureScale = new Vector2(scaleX, scaleY);
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def Update():
        scaleX as single = ((Mathf.Cos(Time.time) * 0.5F) + 1)
        scaleY as single = ((Mathf.Sin(Time.time) * 0.5F) + 1)
        renderer.material.mainTextureScale = Vector2(scaleX, scaleY)