Paris Hilton and Nicole Richie endure a riotous 'Green Acres'-esque reality show that proves party girls are people too. Sort of. After living on an Arkansas farm without cell phones or money in the first go-round, they trailered across the country for 'The Simple Life 2: Road Trip,' and worked odd jobs while touring the East Coast on a Greyhound in 'Simple Life: Interns.' After that, the friends parted ways and Hilton headed to Hawaii for the fourth installment with a new sidekick.