Jeff Goldlum also narrated NOVA's documentary film The Real Jurassic Park in 1993. Made as a companion piece to his 1993 movie Jurassic Park, this documentary explored the ideas of the book and the movie, namely whether or not science could actually bring back the dinosaurs through cloning. Although it has the same title as one part of "When Dinosaurs Ruled", the two titles have nothing to do with each other.
"When Dinosaurs Ruled" doesn't cover the dinosaurs that lived in Asia. However, the show was later bundled together with three other Discovery documentaries about dinosaurs - Beyond T-Rex (about the two other apex predators of the era that dwarfed T-Rex), Tyrannosaurus Rex (about the common misconceptions about the creature) and Asia - Land of the Dragon (a documentary that does cover Asian dinosaurs).