Now for the first time, all of Discovery's very best dinosaur programs in one two-disc set! From the complete Emmy Award-winning Dinosaur Planet to the groundbreaking discoveries of Valley of the T. Rex to the intriguing possibilities of Dinosaurs: Return to Life? and much, much more, the whole family will enjoy this thrilling collection! DISC 1: VALLEY OF THE T. REX Paleontologist Jack Horner is unearthing a mystery... At record pace. In a single summer he's found the skeletons of five T. rex dinosaurs in the arid badlands of Montana. And what the remains of these legendary creatures is teaching Horner is very unexpected. T. REX: NEW SCIENCE, NEW BEAST Experience the history of Tyrannosaurus rex in a fun new way. For young and old, this fascinating program will delight your imagination and show you the king of the dinosaurs that you never knew. WHEN DINOSAURS ROAMED AMERICA Travel back in time to the period when these stunning creatures inhabited our continent. State-of-the-art computer animation, live-action backgrounds and the latest scientific finds show how dinosaurs lived and died in our own backyard. UTAH'S DINO GRAVEYARD Follow the excavation and research of a new species of Therizinosaur, the most primitive member of a bizarre group of feathered dinosaurs. They are believed to be most closely related to raptors - a group that evolved into today's birds. DISC 2: DINOSAUR PLANET In four exciting, adventurous episodes, learn what it was like to be a dinosaur as the sights and sounds of the primordial past are re-created through state-of-the-art computer-generated imagery. THE MYSTERY DINOSAUR Sometimes a discovery forever changes what we think we know, altering our perspective and re-writing history. This is the story of a mystery dinosaur called Jane, baffling the greatest minds in paleontology from the moment she was unearthed. DINOSAURS: RETURN TO LIFE? Learn about how scientists are reviving the possibility of creating a living, breathing dinosaur, but in a different way then we ever imagined.