Amazon Video Game Sale
For a "limited time" Amazon is having a buy-one-get-one-at-half-price sale on select XBox 360 and PS3 games. Games include Fallout New Vegas, Left 4 Dead 2, Lego Star Wars, Portal 2 and much more. There seems to be 63 game titles in this offer. Just add the titles to your cart and it should take off the amount at checkout.
Of course, they take 1/2 off the lowest priced item.