I won't need it for anything except to keep up to date on the latest software so I can stay current and participate in these MR forums. Plus, it gives me an excuse to buy a new imac, which I don't otherwise need. I have a graphite G3 with Tiger and it meets all of my needs just fine. But I understand that Leopard won't run well (or I suspect at all) on it. Lastly, it will make my wife mad, which is fun to do.