Dark Fury is a short animated film, explaining what happens in between Pitch Black and The Chronicles of Riddick.
It was about an hour long I think, but well worth the time to watch. The story begins with Riddick flying through space, where Pitch Black left off. The spaceship gets picked up by a bounty hunter who “collects” specimens like Riddick because she views them as art. I won’t give away any more details, but say that if you’ve seen Pitch Black or plan to see the Chronicles, you need to watch this in between. I give it a B.