Your past or your privacy?

You've just nailed an interview, and the offer is almost in your inbox. Then HR asks to call your former boss, your colleagues, maybe even your graduate advisor. Suddenly, it doesn't feel like you're just being hired. It feels like you're being investigated. So where's the line between a reasonable background check and an invasion of privacy? And if you say no, are you automatically out of the running? On the show: Niu Honglin, Fei Fei & Yushun