For the past 15 years Paul Rudd has pranked Conan O'Brien on his late night shows whenever he's been on. Rudd intros a clip from whichever movie he's promoting, but actually shows a scene from the (terrible) movie Mac and Me. He tricks Conan into believing that he will show the right clip every time. I've heard of this before but have never seen the full clips of each one! In Rudd's defense, the scene is hilarious enough to watch over and over again.