Braveheart (1995---too early?) Gladiator ("quality" is in the eye of the beholder-- I even named my dog Maximus). The Vikings (recent tv movie/series--appalling history but a relatively good picture of a culture that is often undervalued).
I recently saw both parts of Red Cliff and it was pretty good. A few characters where way too OP for my taste, but I suppose it's not entirely blamable considering how nigh-contemporary writers described them "Guan Yu and Zhang Fei were referred to as mighty warriors capable of fighting thousands of enemies "
I plan to watch Agora too(has anyone here watched it?), and can't wait for Medieval to come out! Medieval (2019) - IMDb
The production value, costumes and visuals are absolutely fantastic, possibly the second best Roman-era bit of media I've ever seen (the first being The Passion of the Christ), but unfortunately the writing is not very good. It takes an overly simplistic view of the conflict between the pagans and Christians (and also the Jews, I suppose), where the pagans are shown as being morally perfect while the Christians are only barely short of mustache-twirling cartoon villains. Still, divorced from real history it's a very good film. It's not a film I would say is dumb or shallow, even if historically it's a bit misleading and biased. Sort of how I feel about Kingdom of Heaven, too.