Pre-Order any game and get the following games discounted:
Call of Duty: Ghosts - ( / ) $23.99 / ( / ) $15.99
Thief - ( / ) $23.99 / ( / ) $15.99
Son of Rome - $23.99
Dead Rising 3 - $23.99
Deal works online but not sure if it works in store. Appears to be for GCU only.
LINK (if link doesn't work try reloading, I had trouble with the link on Best Buy's website as well)
If it works in store with a $5 deposit, the 50% trade up plus GCU you could presumably boomerang certain games back for a slight profit which would basically pay for your pre-order then use the gift card to pay for the game when it comes out.
A few options for those interested in the deal.
Not the best selection but decent prices for those planning on pre-ordering games and interested in getting any of the games listed.