“Z/Rex: The Jurassic Dead” (*1/2 out of four) was a brainless bore about a loony scientist (Cooper Elliott) who uses a toxic zombification gas to unleash the world’s greatest killing machine – the Z-Rex- but a team of military troops try to stop it before they become dinosaur brunch. With a title like that, you at least expect some low-rent thrills but you don’t even get that in this jurassic monstrosity. Not scary enough, thrilling enough, or- frankly- bad enough to be entertaining. Looks like an Ed Wood version of “Jurassic Park.”