Amazon has a bunch of awesome Blu-Ray deals today:

Duncan Jones’ Moon on Blu-Ray for $8.99, 64% off the $25 list price.
Close Encounters of the Third Kind (30th Anniversary Ultimate Edition) Blu-ray for $7.99, 68% off the $25 msrp.
And $24.99 Blu-Ray Box Sets:

Die Hard Collection Blu-ray (Die Hard, Die Hard 2, Die Hard with a Vengeance, and Live Free or Die Hard) for $24.99, 64% off the $70 msrp.
X-Men Trilogy Blu-Ray (X-Men / X2: X-Men United / X-Men: The Last Stand) for $24.99, 64% off the $70 msrp.
The Man with No Name Trilogy on Blu-Ray for $24.99, 64% off the $70 msrp.
Resident Evil – The High-Definition Trilogy on Blu-Ray (Resident Evil/ Resident Evil: Apocalypse/ Resident Evil: Extinction) for $24.99, 58% off the $60msrp.
Spartacus: Blood and Sand: The Complete First Season on Blu-Ray for $32.99, 59% off the $80msrp.
True Blood on Blu-Ray for only $27.49 each season, 66% off the $80 msrp.
Heroes: Seasons 1-4 on Blu-ray for $23.99 or $24.49 each season, 70% off the $80 list price.

Blu-Ray Deals:

The Expendables (Three-Disc Blu-ray/DVD Combo + Digital Copy) for $12.99, 68% off the $40 msrp.
The Other Guys (The Unrated Other Edition) for $12.99, 63% off the $35 msrp
The A-Team (+ Digital Copy) for $12.99, 68% off the $40 msrp.
The Office: Season Six for $19.99
Back to the Future 25th Anniversary Trilogy Blu-Ray (+Digital Copy) for $38.99, 51% off the $80 msrp.
Breaking Bad: The Complete First Season Blu-ray for $14.99

DVD Deals:

Dexter: The Fourth Season on DVD for only $14.99, 70% off the $50 suggested retail price. With the DVD you will also receive $5 worth of eligible movies and TV shows from Amazon Video On Demand (Limited to one promotional credit per customer).
Castle Seasons 1 and 2 for $14.99 each
Psych Seasons 3 and 4 for $14.99 each
Toy Story 3 for $9.99, 67% off the $30 msrp.
Family Guy: Volume 8 for $14.99, 70% off the $50 msrp.