Yeah, we've all noticed that a female hero, no matter how tough, gets photographed from the rear for the movie poster. Sometimes it's so obvious that we have to laugh about it. Still, you might be surprised to see how many posters use this same trope in just the past few years.
So, the most recently released image of Catwoman in The Dark Knight Rises kind of got me worked up. The moment I saw it I think I said something to the nature of, “If I have to see one more woman posed with her behind in my general direction, looking smouldering-ly over her shoulder, I’m going to punch someone in the face. And you two [my Tor.com officemates] should be worried, since you’re the closest people at hand.” My co-workers generally prefer a non-violent environment, so I decided to work through this the only way I know how: with lots of photographic evidence.
Oh yeah, there's lots of photographic evidence at Tor.com. Link -via Metafilter, where you'll find a lot more links on the same subject in the comments.
That said, it has become a cliche and as deserves to be ridiculed.