It should be good on anything in the store. Just like a gift card.
Cool. Looks like I'll have half of the 1600 MSP card I'll need for Tony Hawk HD next month.
In other news, Spider-Man 2/3 are $9.99 next week and I bought them for $12.99 this week for this deal. PMing them would put me under the $50, so I guess I just stay with the price I paid? If they come with the movie cash sticker on the case, I think I'll just stick with the purchase price. They'll have paid for themselves anyway.