I got my weekly GameStop email and I noticed this;

http://www.poweruprewards.com/PUR/Index/RetroGameVault

Some of these rewards are pretty damn snazzy, including that Power Glove w/ Super Powerball and the infamous E.T. for the Atari 2600.

Note that these are physical games as well, so this is actually pretty cool (considering if I wanted E.T. I'd have to go to New Mexico and dig one out of a landfill).