Following the phenomenal success of their Walking the Dinosaurs series, the BBC produced this special, focusing specifically on Allosaurus, a Jurassic Period predecessor to Tyrannosaurus Rex. The program, narrated by Kenneth Branagh, uses the fossilized remains of an Allosaurus, nicknamed Big Al, as the basis for the story. Using state-of-the-art computer animation, Big Al is brought to life as viewers discover how this ferocious predator mated, hunted, and died. Also included is Big Al Uncovered, a "making of" segment of sorts. Here, using the Big Al fossils, scientists explain why they attributed particular traits and characteristics to the animated Big Al. ~ Matthew Tobey, Rovi