I was recently in Norway helping my aunt upgrade her iMac to ML. She was still on Leopard (10.5.4 I think), so I had to order her a copy of Snow Leopard - or so I thought. When the Snow Leopard DVD finally arrived, I began to prepare her computer for installation by running Software Update. One of the items in Software Update was a OS X combo update, which to my surprise brought her computer all the way up to 10.6.8 w/ App Store. It turns out I didn't need to order SL after all. Knowing that would have saved a lot of time and a few NOKs.