Each year, millions of people tune in to watch about a dozen other people live in a house on television. Every second of the contestants lives is broadcast on the Internet and on a television show produced several days each week. People have learned of family tragedies, events like 9/11, their positive HIV status and more as the audience watches it all. But what is it like to be on CBS's Big Brother? How do you get on the show? What are the production secrets everyone wants to know? This week we talk to Rachel Swindler, star of Big Brother 20.