I recently purchased a DVD of Aberfoyer Junction Memories - a 2-rail O-scale layout in Canada; it was made around 2001 so it's not HD though the picture quality is "very good" IMO. Simply put this is the best or near the best video production of any electric train layout I've ever seen, and I've seen many over the years. The sound effects are subtle and just right, and the background music is Glenn Miller's orchestra - absolutely perfect. I just purchased Aberfoyer Junction Memories - part II and look forward to it. Unfortunately, and like many works of art, these DVDs were not mass produced, only having been sold during a public exhibition in 2001, but if you look around and are patient, you'll find one like I was able. FWIW: I found parts I and II on e-bay.
I was going to post this on the main 3-rail forum page, but interesting and worthwhile topics change and get buried under the fluff. I enjoy all O-scale or O-gauge trains, though I have to admit the 2-rail O-scale layouts are top notch IMO, and wanted to pass this along for others who may enjoy well-done videography of a great layout.