cur = head;
while (cur != null)
{
	Console.WriteLine(cur.data);
	cur = cur.next;
}



static void DoSomething(Node cur)
{
	if (cur != null)
	{
		Console.WriteLine(cur.data);
		DoSomething(cur.next);
		Console.WriteLine(cur.data);
	}
}


And its invoked like this: DoSomething(head);