Just a heads up, I went to BestBuy.com to purchase Atari Anthology for the DS, and when you buy it, there is an offer for a free Pong t-shirt which looks pretty nice.
Here's a link to the shirt.
Not a horribly great deal, but if you're planning on getting some games made by Atari, it might be worth the extra little money to get it online.
I also appreciated the $18.00 in McDonalds bucks that made the total come to about $6.00