I haven't seen Kingdom of Heaven, but I've read that the extended director's cut is the superior version of the film. It's a Ridley Scott film. Then again, so was Prometheus.
I had it in my Netflix queue for years, but never actually got around to watching it.
Henry V is a Kenneth Branagh adaptation of the Shakespeare play. It put Branagh on the map as a director, and is supposed to be a first-rate adaptation. As a historical document, like the play, it is most likely broadly accurate, but somewhat dramatized.