Sex scenes are notoriously uncomfortable for most actors to film, for very obvious reasons. They’re not usually an injury hazard, though. That was, however, the case for Diane Lane on the set of Unfaithful, Adrian Lyne’s steamy dramatic thriller in which Lane scored an Academy Award nomination for her visceral portrayal of a suburban New Yorker who cheats on her husband (Richard Gere) when she indulges in a torrid affair with a Frenchman (Olivier Martinez) she meets in the city. (Unfaithful w...