Morgan Freeman is known almost as well for his low voice as for his acting skills, so there's something pretty perfect about hearing how he sounds after sucking on a helium balloon. In a clip from the Science Channel's Through the Wormhole, a documentary Freeman hosts about the mysteries of the universe, the actor spoke normally before inhaling the helium, his voice turning hilariously squeaky. Of course, high-pitched helium voices are nothing new, but it's far more entertaining when it's Freeman, right?