Movie science is already a funny thing. You have characters in lab coats spouting off technical-sounding jargon about molecules and stabilizers, almost as if they're trying to confuse you so you don't realize none of the science actually makes sense. But when you give that dialogue to actors like Denise Richards and Keanu Reeves, well, it becomes even funner. In honor of, Natalie Portman's gorgeous-but-dubious Jane Foster in this Friday's "Thor: The Dark World," here are 10 totally implausible silver screen scientists.