31 Random Movie Facts You Need To Know Wait — which porn star was in Ghostbusters? Kevin McShane BuzzFeed Motion Pictures Staff 1. It’s time to take your movie trivia game to another level. Video available at: http://www.youtube.com/v/cDulE7UWe94. youtube.com 2. For example, did you know that Michael Caine’s Alfred was supposed to talk to the Joker in this scene from The Dark Knight, but Caine was so freaked out by Heath Ledger’s appearance that he forgot his lines? View this image › youtube.com 3. Or that Titanic’s run time was the same as the amount of time it took the actual Titanic to sink? View this image › youtube.com 4. Hey, we didn’t either. Check out more articles on BuzzFeed.com! More ▾ Facebook Conversations Can your pet compete? Find out now. Get BuzzFeed's Cute or Not app! Get the App!