6. Watson The Jeopardy Computer
It's an odd choice, I know, but let's be honest: Watson is the most famous supercomputer since Skynet. Technically he doesn't fall under the category of a typical celebrity since it's not...you know, human. Still, this is a computer that took on former Jeopardy champs and did all right. Still, that does beg the question: what would a supercomputer do with the money it won? Regardless, I see two ways Watson could be used in a storyline. One, the computer program is installed at the university where the guys work, and mayhem occurs. However, I'd rather have the second option where Sheldon encounters Watson in a nightmare he's having. Maybe in the episode something bad happens to his laptop, and then he worries what would happen if all other computers started to fail. This of course translates into him having a dream where computers take over the world. Watson and Skynet, taking over the world together. Pretty creepy. Still, it would only be in a dream...hopefully.