You can get five bucks off a new Blu-ray by trading in an old DVD.
If you have a significant DVD collection sitting around and you're not sure what to do with it, Best Buy has an option for you - turn it into a Blu-ray collection.
Trading in a retail DVD with the case - no burned DVDs obviously - will get you a $5 coupon to be used on the purchase of a Blu-ray. You're limited to five coupons per visit and the promotion seems to be limited to a maximum discount of $5 per disc, but it's a step up over having DVDs collecting dust.
The coupon is valid on 135 different Blu-ray discs, mainly consisting of older and catalog titles. There's some good stuff on the list though, including 'Inglourious Basterds,' 'Taxi Driver,' and 'Toy Story 3.'
Source: Best Buy