The Best Buy in Lewisville, TX is moving across the highway to a new location on Friday June 9 (I think it's the old Ultimate Electronics location). There are 10% off coupons available for pick-up at the customer service counter at the old location (the one near Petsmart). Coupons are good June 4-11 and are not specific to the new store (coupon says "valid only at Best Buy stores in the USA"). It's not good on media (DVDs, CDs, Software, etc) but is good on TVs, Computer Accessories, Camera accessories, music players, phones and appliances.

Depending on where you live and what you need, it may be worth the drive.