He can save the world
Heroes has included a number of time leaps, including sending Hiro Nakamura back to the 17th century. But the 2006 episode Collision was one of the most dramatic moments in the first, and best, season of the series. It was the episode in which Peter Petrelli is riding the subway, and time stops for everyone but him. And then a very Americanized Hiro approaches him and says, "My name is Hiro Nakamura. I am from the future. I have a message for you." Since then, the series has lost its power to surprise; but this episode made our jaws drop.