Although there is no narration, this is a very well-made video showing the train features and scenery on the Toronto to Vancouver railway trip. You get a very good idea of what to expect on such a trip.

Per the video: "A journey from Toronto to Vancouver by train, across the Shield, over the Prairies and through the Canadian Rockies. Showing the train, sleepers, dining-car, food, dome, 'Park' car and the amazing scenery."