Pretty kickass! It is a 2-disc set with a lot of cool shit on the second disc.
1. Making of the movie
2. A Bio, which also has a lot of stuff about the reality behind a lot of scenes in the film, and interviews his grandson.
His son, was George Patton III, who like his father was a career soldier and died 2 years ago. Here is a page with some newspaper obits:
http://www.arlingtoncemetery.net/gspatton.htm
3. A nice bio of one of the units in Patton's 3rd Army who got the shit kicked out of them in the Battle Of The Bulge....