This deal has ended.
2nd Update: the deal is dead! This has unexpectedly expired. Arby's is offering a Free BBQ Bacon Roast Burger with any drink purchase via this new Printable Coupon. I can't say I've tried it, but some friends told me recently that it's pretty good. The coupon is valid through 7/12. Use their Store Locator to find an Arby's near you.