As an aside to you, Decimus, I can state here and now that there are two BBC series that I can watch, re-watch and re-watch, without ever getting fed-up. One is the incomparable 'Claudius'; the other is 'Tenko'.
I can't say I've ever watched Tenko, but speaking about Prisoner of War dramas, I did find the Kiefer Sutherland/ Robert Carlyle feature 'To End All Wars' a powerful film , even if it did show its 'melodramatic tv-movie' colours a few times. I'd recommend others to rent it or seek it out.
As for I, Claudius I enjoyed that the first time I saw it, and I continue to enjoy it with every viewing. It's probably my most watched Television miniseries.
As for Rome, I am enjoying a lot more this time round. I've already seen it once on TV and this is my second viewing of series one on DVD. I originally planned to watch only one episode a night, but sometimes I find myself so engrossed with it that I want to watch another episode. I watched episode eight, 'Caesarion'. Tonight I'll watch Utica.