The mind, it is boggled.

From Carrie Brownstein's Monitor Mix, an excerpt from an interview Brownstein did with a producer from The Bachelor (yes, I know):

Q: What tricks or strategies does the show employ to amp up the drama and tension during the taping of the show?

A: Well, in the private one on one interviews with a producer (like me) it is the producers job to get the sh*t talking started, like "tell me honestly what you think of Sally" -- if the interviewee does not want to respond in a catty way then the producer will usually go to the next level, like "well I personally think she is a self absorbed, attention starved skank," and then see if the person will take the bait. Once you start learning who in the house is not well liked it is easy to start seeding conversations and gossip. Also, if the conversations linger too long on favorite movies and stuff the producers will step in a say, "ok we all know we signed up for a TV show -- so if you don't start talking about something more topical then you can't have the sushi you requested tonight." The smarter cast members start to realize that everything can be bartered. Like, "I will give you a good one-on-one interview about Sally, IF you let me listen to my iPod for the rest of the day."

It's like the opposite of ethical.

If maintaining people's dignity is at all important... ah, never mind.