Does adding a celebrity to a traffic safety PSA make it better? We’ve had quite a variety of traffic safety PSAs here in the PSA smash up. Some are gory, some are sentimental, some are sad, some are funny. We’ve even posted a previous celebrity PSA with Helen Mirren (one of my favorites). Ultimately, the goal of a PSA is to get the viewer to change a behavior; in our case, stop dangerous driving behaviors. When Shaq tells you to drive like you give a #&%@, are you inclined listen?