T.rex Exposed from the show Nova is a 54 minute TV science documentary from PBS with Don Lessem as host and narrator. The episode's storyline tells of a detailed and interesting look at the most famous dinosaur T.rex and will let the audience witness... (more) the discovery of the science and lore of dinosaurs in general. It unavails a suspenseful dig in Montana where a crew is carefully uncovering one of the most complete Tyrannosaurus rex specimens ever found: a remarkably preserved skeleton 40 feet long. T.rex Exposed is a creation of Michael Ambrosino with Paula Apsell as executive producer.