Almost all the major retailers have some kind of $25 or $50 gift card offer with Xbox 360 Arcade and Elite console purchases.
Best Buy has Mass Effect 2 (360) for $39.99 and are throwing in a free Wii Sports Resort when you purchase a Wii console.

Kmart has a surprising amount of game deals this week, including Just Cause 2 (360/PS3) for $44.99, a buy 1, get 1 50% off promotion on select PS3 and DS games, and a $25 gift card with a Wii console purchase.

Target has the Nintendo DSi for $155.

Toys R Us will throw in a 2nd Wii Motion Plus when you buy Red Steel 2. In addition to their $50/25 gift card offer on the Xbox 360 Elite/Arcade, they will sweeten the deal with an Energizer Charge Station. There is a also a 2 for $40 deal on select DS games. </img> </img> </img> </img>