I just ordered the DVD from Amazon and am looking forward to it. Especially the commentary you cited above. I've been trying to get into the pre-Christian "Roman mindset" for a while now. And while I think I come closer to it than many people by virtue of studies in paganism, it's still difficult at times. It's really quite amazing how much cultural conditioning and baggage surrounds us, the weight (often dead weight) of history bearing down upon us as it were.
Most interesting is the TOTAL lack of body-shame, gettting or being naked did not deprive a person of rank of any dignity (though rules of appropriate conduct still applied ), so , for example, we see Mark Antony happily chatting to Vorenus whilst being cleaned by his body slave in the courtyard of his house ( or rather the one he stole from Pompey).