Man, it's been a long time since I've purchased anything at Gamestop. It may have been Twilight Princess on the Wii launch day - though I bought the Wii at WalMart!
I went into one a few weeks ago, though. Didn't pull the trigger on anything.
Can't say I'd turn my nose up at the opportunity to take a piece of this contest to Gamestop for some free loot! Thanks for the opportunity!