If you've been waiting for HD DVD's to come down in price before you take the plunge and buy your favorites instead of renting them every other week through Netflix, now is your chance.

Gift Shop merchant Amazon.com is doing another "Buy one, get one free" promotion on select HD DVD titles. There is no time limit mentioned on the offer, but previous such sales have lasted less than a day, so don't delay making a purchase if you are inclined to do so.

The list of titles is pretty familiar to those who have seen previous sales before, and some of them also overlap with the titles available with the "5-free discs by mail" offer currently available from Toshiba for buying an HD DVD player, Xbox 360 Addon, or HD DVD-equipped laptop.

Here is a quick rundown of the 78 titles:

• Casino
• The Polar Express
• Goodfellas
• The Departed (HD DVD only)
• The Departed (HD DVD/DVD Combo)
• Troy (Director's Cut)
• Blue Planet (IMAX)
• 12 Monkeys
• Superman Returns (HD DVD only)
• Superman Returns (HD DVD/DVD Combo)
• The Fast and the Furious
• Tim Burton's Corpse Bride
• The Deer Hunter
• Training Day
• Happy Gilmore
• Seabiscuit
• Letters from Iwo Jima (HD DVD)
• Letters from Iwo Jima (HD DVD/DVD Combo)
• Unforgiven
• Flags of Our Fathers (2-disc Special Edition)
• Kiss Kiss Bang Bang (HD DVD)
• Kiss Kiss Bang Bang (HD DVD/DVD Combo)
• Animal House
• Blazing Saddles
• Cinderella Man
• U-571
• Backdraft
• The Game
• The Fugitive
• Ray
• Dog Day Afternoon
• The Fountain (HD DVD)
• The Fountain (HD DVD/DVD Combo)
• Bullitt
• The Perfect Storm
• Superman II - The Richard Donner Cut
• Liar Liar
• Enter the Dragon
• The Jerk
• Poseidon
• Happy Feet (HD DVD/DVD Combo)
• Syriana
• Deliverance
• Dreamgirls (2-disc Showstopper Edition)
• Friday Night Lights
• The Dirty Dozen
• National Geographic - Relentless Enemies
• The Bone Collector
• TMNT (HD DVD/DVD Combo)
• The Good Shepherd
• Lethal Weapon
• The Getaway (1972)
• Jarhead
• The Hurricane
• World Trade Center (2-disc Commemorative Edition)
• Purple Rain
• Space Cowboys
• Assault on Precinct 13
• Jailhouse Rock
• Scooby Doo - The Movie
• Reds (25th Anniversary Edition)
• Gothika
• Lady in the Water
• The Break-Up (HD DVD/DVD Combo)
• Nacho Libre
• Out for Justice
• You, Me, and Dupree (HD DVD/DVD Combo)
• The Lake House (HD DVD)
• The Lake House (HD DVD/DVD Combo)
• The Hitcher (HD DVD/DVD Combo)
• Freedom Writers
• 16 Blocks (HD DVD/DVD Combo)
• Rumor Has It
• Norbit
• ATL (HD DVD/DVD Combo)
• Waist Deep
• Lady in the Water (HD DVD/DVD Combo)