AKA: MI-5 This long running British series is far and away the best spy show ever produced for television. It's what 24 could have been if they didn't feel the need to explode something every other episode. This show was never long on nudity, but it had a moment or two. Irish actress Genevieve O'Reilly played a ruthless CIA agent who falls for the wrong man. Luckily, the sexy blonde was taking off her clothes while she was putting on a silly American accent.