Used the coupon in Chicago last night - Elston Ave. store... I'm guessing they've seen a lot of them because the cashier scanned it without even reading it.
Saw copies of Fallout 3, Brutal Legend and Bioshock out of the case in the cheap section, stickered @ $19.99. Only MLB 2k9 was yellow...
Kmart was off my retail radar for years until I started following Kaydigi's posts and making weekly (but as of yet deal-less) trips. She may be their best marketing secret.