I am appalled at the ignorance of some of the things posted in the boards of this show. I think it's pretty outstanding! The casting is excellent, the attention to history in detail of costumes and culture is awesome and I rather like the fact that Marco Polo himself is more of an observer than a main character...the Mongols, especially Kublai Khan, stealing every single scene! People have bemoaned the "stiffness" of the actors; I can only chalk that up to very little exposure to Asian culture, film or acting! Watch some classic Asian made films and you'll see the acting in this offering is very true to form. As for casting of Chinese as Mongols when they are two very distinctly different ethnic groups,the make-up did a very credible job transforming them into believable Mongols...who are much darker in skin than Chinese, have higher cheekbones, broader faces and a more pronounced slant to the eyes than Chinese as well. The choice to have each group speak in English was a wise business decision. The biggest audience for this is Americans who don't exactly have much patience with subtitles. There was a nice combination of native languages spoken either in the background or as asides that gave one a good flavor of the languages. The attention to detail in costuming was really, really good. And for those worried about historical accuracy...there are almost 150 different editions or versions of The Travels of Marco Polo which is the travelogue "written" (actually spoken to a scribe) by Polo himself. They all have great flights of fantasy and magic and extremely improbable events in them so much so that some scholars have wondered if Polo had ever really been to all the places he claimed to visit, so a few inaccuracies ( like everyone speaking in English) is actually right in line with Polo's original work and actually might have been something the author himself might have appreciated. In short, stop looking for production and script flaws, stop displaying such ignorance about Asian cultures and just sit back and enjoy a darn good-adventure film!