There're flies buzzing around in most of the scenes of the movie, and for anyone who thinks that could be an accident, all they need to do is look at the closing credits. It's not a comment on the sanitation state of Rome? Is it?
It's possible that the flies simply interfered with the filming (always wanting camera time, etc.), so they make a joke of it in the ending credits. :) I'm serious, to a point. When I went to Rome just last year, there were flies everywhere -- the first thing I thought of was this movie. It might have been an inside joke. Where was this filmed?
Well, let me guess. You're either lost or desperately searching for a good tailor!
The film WAS shot to some extent at Cinecitta and the flies were a constant problem. It is said that Lester finally gave up getting the stand-by crew to brush them away and they became--as many who worked on the film--'uncredited extras' with an additional reference to their work in the animated final credit-roll. It is interesting to compare the gritty look of this film with the current HBO production 'ROME' as it is also being shot at Cinecitta.