"I dressed my maids as Amazons and rode bare-breasted halfway to Damascus. Louis had a seizure and I damn near died of windburn... but the troops were dazzled..."
Monarchs have long provided the Big Hollywood Ladies with some of their plummiest roles - it's a tradition that dates back at least as far as 1912 and Bernhardt's Elizabeth I, and one that still intrigues - just ask Helen Mirren or Kirsten Dunst, both of whom have assayed (with wildly varying results) crowned heads in recent years.
Kate more or less played herself as Eleanor in The Lion in Winter - imperious, vulnerable, catty, and supremely wry. There are those who argue that was always the case with Hepburn's acting, just as those who would make the case - and a fairly plausible one, I think - that there's no reason not to think that Eleanor of Aquitaine was, in fact, fairly Hepburnische.
So I think we shall occasionally be looking in at these cases when celluloid royalty meets, in various ways, the real thing. This is one of my favorites; what are yours?