Brit beauty Keira Knightley recently described her experience starring with Mad Men babe Elizabeth Moss in the classic lesbian play The Children's Hour on the West End stage: "Oh, God, the only thing that's going through my head to describe it is it's like sex with an orgasm at the end of it!"

We're sure Elizabeth feels the same way, Keira.

Keira explains what it's like being on stage as a boarding school teacher accused of eating at the Y with one of her female co-workers, as opposed to being in a non-nude movie about pirates: "Whereas film is like you have sex, but you never get the orgasm. A lot of stopping and starting... It's the completion of the story, the full arc."

Her rug-munching role also skinspired Keira, who has already played a bare-breasted bisexual bounty huntress in Domino, to find new ways to really get into her character: "If I'm not getting better, not learning, not changing, then what's the point of it? It must be boring for people to watch it if it's always the same."

That depends on whether "the same" means "fully clothed" or "fully frontal."