I don't know how many of you are Ghostbusters fans, but I really am. I've been a fan since I was a child, so it stands to reason that I have for a long time wanted a third film. For whatever reason (mostly to do with Bill Murray, if you believe the stories), a third film has never happened.
But according to Dan Aykroyd, Bill Murray has finally agreed to do a third Ghostbusters film... albeit in CGI animation. Aykroyd also indicated that a Ghostbusters video game is in development (a very early build had been released to the viewing public when it was thought the game would be on hold for a really, really long time). Aykroyd's comments indicate that he will be doing voice work and motion-capture for the game next year.
Both interviews can be read here and here, respectively.