First Post so tell me if I fluke.
HMV now are taking pre-orders on Watchmen and they have exclusive cases for both the DVD version and the Blu-Ray version. For £17.99 (£2 more than the 2 disc special edition) you can get an exclusive Rorschach mask case on DVD. And for £22.99 (an extra £5) on Blu-Ray you can get a Dr. Manhattan face case.
Not cheap but a must for collectors!