In anticipation of this celebration, a brand-new introduction was filmed with Ghostbusters stars Bill Murray, Dan Aykroyd, Ernie Hudson, Sigourney Weaver, Annie Potts and director Ivan Reitman and will be played for the film. Suit up for classic comedy for this special 35th anniversary event!- "Ghostbusters" boasts an incredible cast led by Bill Murray, Dan Aykroyd, Harold Ramis and Ernie Hudson as a group of intrepid paranormal investigators who go into business for themselves to rid haunted buildings of troublesome spirits, unaware that their endeavor could save the world. Written by Dan Aykroyd and Harold Ramis, and Produced and Directed by Ivan Reitman, "Ghostbusters" also stars Sigourney Weaver, Rick Moranis, Annie Potts and William Atherton.