Walk in the footsteps of the "terrible lizard" with these three BBC One documentary programs, two from 2002's "Chased by Dinosaurs" and a 1999 episode from "Walking with Dinosaurs." First, zoologist Nigel Marvin goes back in time in search of "The Giant Claw." Next, Marvin reveals how the world's largest predator attempts to vanquish an even larger prey, in the "Land of Giants." Finally, you'll follow the life story of an "Allosaurus," once the predator king of the Jurassic Period, and witness the excavation and restoration of "Big Al," the most complete skeleton of the species yet discovered. Narrated by Avery Brooks. 90 min. total. Widescreen (Enhanced); Soundtrack: English; bonus program "Big Al Uncovered."