Pitch Black & The Chronicles of Riddick

RiddickTwo mediocre sci/fi movies that follow the adventures of Riddick, a criminal/warrior/antihero, as (in the first movie) he helps a group of people survive on a desert planet where monsters, who attack when there is darkness, stalk them, and (in the second) fights a seemingly unstoppable empire bent on destruction. There are interesting ideas and some nice f/x here, but just too much cliche and not enough strong plot or character development.