Centurion, Ironclad
Both movies featured Christopher Lambert clones as protagonists, Centurion had an interesting premise of the mysterious disappearance of the IXth legion in Britannia, but it quickly deteriorated into Enemy behind the Lines set in Roman times, with some Magnificent Seven thrown in. The action was... pretty bad, except for some Battle in the Teutoburg Forest knock-off early in the movie.
There was also some nonsense about a mute Russian supermodel huntress kicking everyone's ass, and a Pictish witch named "Arianne". Overall, pretty mediocre, but at least the moviemakers had the guts of having pretty much everyone kick the bucket in the end, plus it wasn't *that* historically incorrect.
As for Ironclad, this one was much better. It again basically came down to the Magnificent Seven in medieval times, but as I understand, it was quite historically correct (dealing with the aftermath of the Magna Charta), the actor who portrayed King John was pretty brilliant plus the movie features some very brutal/realistic medieval combat (and torture scenes) that Hollywood movies set in the same era nowadays (say, Kingdom of Heaven) completely lack.
The only downside was a cringe-worthy underdeveloped romance subplot between a Templar struggling with his oaths and a young noblewoman.
Oh, and I guess another (minor) quibble was the discovery of Vladimir Kulich's man-boobs.