It's a dark day for Fox. Their summer tentpole X-Men Origins: Wolverine has leaked online a whole month before the movie was set to tear up multiplexes. This is a disaster on an epic scale for the studio -- not only because a swath of fanboys will get to see the movie early (I hear they like to spend time online), but even more so because key scenes in the leaked copy have some jarringly unfinished effects shots, namely the film's climax. It features Wolverine and Sabretooth (Liev Schrieber) doing battle against a bald mutant on top of a nuclear reactor. What's meant to be the film's most thrilling and impressive sequence, is now, well, really awkward. See screengrabs for yourself after the jump.