var other : GameObject;
other.networkView.RPC("MyFunction", RPCMode.All, "someValue");

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
public GameObject other;
void Awake() {
other.networkView.RPC("MyFunction", RPCMode.All, "someValue");
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

public other as GameObject

def Awake():
other.networkView.RPC('MyFunction', RPCMode.All, 'someValue')