Picture
The film is presented in its original 1.33:1 aspect ratio and is extremely watchable. The DVD would have obviously benefited from archival restoration of the film elements as the usual amount of scratches and other age related defects appear throughout the movie. Another problem is the fluctuation in black level throughout the presentation. Blacks in portions of the frame occasionally shift to dark gray and back. The overall effect isn't particularly distracting and isn't bad for a film from 1946.

Sound:
Presented in digital 2.0 mono, the dialogue is clear throughout while the music is just a tad harsh.

Extras:
The Big Sleep DVD contains two versions of the film, the 1946 theatrical release and a 1945 prerelease version of the film. The '46 version had numerous scenes between Bogart and Bacall reshot to improve Bacall's role. These are accompanied by a 16-minute documentary with UCLA professor, Robert Gitt, who analyzes the differences between the two versions. Also included are production notes, a cast listing and the theatrical trailer.

Final Thoughts
A great movie with great stars. This is the best presentation you are ever going to get of the Big Sleep and I recommend you get it now. You can't beat two versions of this classic film (A whole other version, how's that for an extra?!?!?! ) on the same disc and you can't beat the price. I've seen this going for as less than 12 bucks online so act fast! Highly Recommended.