This deal has ended.
Update: this is now valid through 9/30. BestBuy.com again has a 3 for $20 deal on an unbelievable group of DVDs including many all-time great movies (Last of the Mohicans, Thomas Crown Affair, Wall Street, Garden State and Platoon) as well as The Princess Bride, When Harry Met Sally, First Daughter, Big Momma's House, Dances With Wolves, Fargo, Unfaithful, Raging Bull, Master and Commander and others. The selection is the best of any BestBuy "Buy X DVDs for $X" deals ever. Shipping is $5.37 for 3 DVDs or in-store pickup is free.