I didn't realize they were FILMING "The Other Boleyn Girl" - I thought you were talking about the BBC production and was a bit confusing to me, as that starred Natasha McElhone, who was born in London!

I think Rachel Weisz is a lot more believable as a young woman in her early twenties (which is exactly what she plays in "The Constant Gardener", for example) than Keira Knightley is in costume dramas in general (leaving aside "Pirates", in which I think she does very well, but that's more fantasy than anything else.)

[quote]It's that you don't want her cast as any character ever :-)[/quote]

No, that's totally not it at all - I just think that casting directors see "young English ingenue" or something and they reach for her, even when she's totally unsuitable for the role. (And by the way, I think Scarlett Johansson is hugely overexposed and not right for many of her roles too).
As for all these other films you mention, well mostly just that I don't think The Other Boleyn Girl or Bridget Jones were particularly great book so I don't really care what they butcher in the films, whereas Atonement is one of my favorite novels ever and I'd rather they didn't muck it up. (And, by the way, I also happen to loathe the Gwyneth Paltrow version of "Emma" not just for the lead but for a lot of other reasons.)

I'm sure I'll go see it anyway, but the casting gives me pause, that's all.