Tonight Justin Bieber will be guest starring on CSI: Las Vegas, playing Jason McCann, who is a troubled teen that has been faced with a bad decision about his brother. What the producers of CSI have done by featuring Justin Bieber on the show, is create an entirely new fan base. The majority of CSI viewers probably are not Justin Bieber fans. However, that certainly won’t be the case tonight. There will be a huge influx of teenage girls who will be watching the show tonight for the first time. If only a small percentage get hooked on the show, the producers found a new target audiences for the hit CBS show.