Marty Cooper - an cellphone inventor. No need to tell who's this guy but why I'm giving this intro as he's not such popular among us. He's the one who invented the cellphone in the early 1970s, however he has been more popular out in the public recently, when he has given an length interview to CNN in which he ruminates on the invention that quite literally changed the world. Perhaps most notably is that he says he and his team at Motorola always "knew that someday everybody would have a cellphone," but that he found it "hard to imagine that that would happen in my lifetime."