This deal has ended.
BestBuy.com has a $4.99 DVD Sale on select titles this week (through Saturday 3/17). 61 titles are available, including: Mystic River, Cellular, Runaway Bride, Twister, The Wedding Singer, Road to Perdition, Orange County, I Am Sam, BoilerRoom, North Country and Minority Report. This is as low as I have seen most of these titles. Shipping adds $1.79 per DVD or in-store pickup is free (the pricing is online only, though, so the order must be placed via the web).