By Roger Moore, McClatchy-Tribune News Service Forget blowing the images up to Imax size and converting the lunging velociraptors and T. Rexes into 3-D. The best reason to revive Jurassic Park for its 20th anniversary is Jeff Goldblum.Yes, children, there was a time when Goldblum was sci-fi's ultimate explainer, as producer Dean Devlin labeled him in Independence Day.