Having the two Riddick movies in one pack is great, the classic Pitch Black introduced the character and chronicles continued the exploits. Would love to have another follow on.
The movies are great quality action oriented sci-fi with the criminal with the love of the dark.
The produciton quality and features of both dvds is great, the extras including the bounty hunter logs for pitch black are a great addition and build the character further than what you would otherwise get from watching the movie.