By now, one expects contemporary films that purport to love '80s genre films to be contrived. So many of today's studio-produced love letters to properties of that earlier time are misappropriated fan service, and hence knowingly purposeless. While Knight and Day isn't a sequel, comic book movie, or adaptation, it does recall the bygone days when almost every generic TV show and movie was defined by the buddy system. In those wild and wooly days, it seemed like every cop, lawyer, private investigator, bounty hunter, and truck driver teamed up with someone that was his or her polar opposite. In Knight and Day, she's a delicate, even precious, tomboy and he's a deranged spy. That's all the setup you need and all the setup you get.