Some Famous people I have met at CP: Rob Lowe, Kid Rock, Omar Vizquel(from the Indians), Carl Banks(super bowl champ with Giants, and later played for the Browns), Alanis Morisette.
Famous look alikes I have seen at CP: Stone Cold and Marilyn Manson(both looked very real, but weren't)
You can tell if the person is really who they look like if they are beong escorted around the park by someone from the Marketing Department. Anyone not escorted is either nuts, or not who they look like.