On the premiere episode, a disorganized, animal loving mother with 25 pets trades places and families with an obsessively tidy mother who loves to-do lists and detests animals.

A 36-year-old multimillionaire heiress and mother of three from New York swaps lives with a 45-year-old wife and mother of two from rural New Jersey.

A gun-toting conservative who hasn't shared a bed with her husband in 10 years trades places with an anti-NRA animal rights activist with no job and less control over her daughter. By the end of week two, one of their husbands is in tears, while the other is tearing his hair out over his liberal new houseguest.

A free-spirited vegetarian with a messy streak leaves L.A to sample the life of a straight-laced stay-at-home Mom in New Jersey who had a rough time dealing with her counterpart's New Agey ways. However, after a week passes, it's their kids who are having trouble, as one group gets a rude awakening about their video-game habits.

A fitness-minded type-A mom ditches California for the life of an emotional, overweight housewife in Florida. The switch shakes things up for both women, but even more so for the one who can't get used to a home devoid of fast food and friendly attitudes.

This week, in ""Bittner/Reimers,"" a strict, vegetarian, ex-Navy wife who disciplines her children swaps lives with a junk food-eating, living-large mother who allows her two headstrong teens free rein.

This week in ""Harris/Van Noy,"" an Oklahoma mother of three who agrees with her husband's edict that an obedient wife belongs in the kitchen, swaps lives with an unorthodox, working mother from Texas who believes her stay-at-home husband should rule the kitchen.

The Paiss & Davis Families trade husbands.

A tattooed, punk rock mom swaps lives with a Southern Baptist, traditional mother.

A Mississippi stay-home mother who gets gets walked all over by her by her children swaps places with a strict mother from Maryland who lays down the law at home and at her job.

An educated and organized mother trades families with a waitress who struggles to control her three wayward daughters.

A coupon-cutting, bargain-hunter, stay-at-home, mother from Ohio trades lives with a high-powered executive from Maryland who despises coupons, clutter and children ruling the house.

One-half of a lesbian couple is switched with a conservative, God-fearing homemaker from Texas.

Stay-at-home mom Michelle Pyke swaps life at the family owned funeral home for life on the road in the Smith family's converted Greyhound bus.

An assertive, domineering wife of an inter-racial couple swaps lives with a subservient, stay-at-home wife from a very different minded inter-racial couple.

A very conservative, former military mom with strong pro-war views swaps lives with a liberal, pacifist art teacher and anti-war protester.

A home-schooling, stay-at-home mom who lives in a tree house swaps places with a Type A, Harvard educated mom who works full-time for a finance company.

A supportive, laid back CEO of an all women promotional firm swaps roles with a chauvinistic, tough-talking boss from an all-male car dealership who refuses to hire women for sales positions.

A millionaire family accustomed to living a life of luxury leaves the butler behind when they go on vacation with a blue-collar family whose favorite vacation spot is a low-budget RV trailer park next to a dairy farm.

A well-off Rhode Island mom who does all of the cooking and cleaning for her boisterous Italian-American family swaps places with an energy-conserving, dreadlocked, dumptser-diving, egalitarian mom.

An animal rights activist mother who eats only raw food and has a vegan cat that doesn't eat meat swaps lives with a back-country mom whose motto is ""Kill it and grill it"".

Several couples from Season 1 are interviewed to see how the show affected them one year later.

The Long family are avid patriots who enjoy the "American way," which includes fast food, 4X4s and paintball, and the man in the family believes the wife is there to do "skirt work" such as cooking and cleaning. The wife will be switching places with the Stephens-Fowler family of California, who believe in higher education, taking care of the environment and a healthy style of living.

The families that have been chosen for the 100th episode swap are the storm-chasing, science-obsessed Heene family from Colorado and the psychic, performing arts-loving Silvers from Florida. When the Heene family aren't chasing storms, they devote their time to scientific experiments that include looking for extraterrestrials and building a research-gathering flying saucer to send into the eye of the storm. In this ultimate swap, the Heenes swap lives with a psychic mom who speaks to the dead and can control the weather, her husband and her children -- who believe they are destined to be stars. This show will feature aliens, punk rockers, past-life regression and, for the first time ever, the children from the two families will face off in a kids' table meeting. "Heene/Silver," the 100th episode of Wife Swap, destined to become a classic!

In the sixth-season premiere, a wife with three children and 14 plastic dolls called "reborn babies" swaps with a strict family that employ their three boys at the family coffee shop and hot-dog stand.

A family of pop-star wannabes swaps with a family of social activists.

A family of Goths who dance ballet and commune with the dead swap with an ultracompetitive hockey-playing family.

An animal-obsessed family with 29 pets and a disregard for appearances swap moms with a fashion-obsessed family that don't tolerate animals.

A successful entrepreneurial family who believe in positive thinking swap with an unemployed family struggling to make ends meet in a trailer park.

A male-chauvinist family of football fanatics swap with a hippie family that place high values on creativity and individuality.

A strict, clean-cut clan who put on a wholesome traveling variety show and live in an RV swap with a family of lowrider and car-show fans who don't believe in rules for their five daughters.

A family who live like pioneers, including traditional roles for man and woman, swap with a family headed by a breadwinner mother and obsessed by modern technology

A survivalist family preparing for the end of the world in 2012 swap with a family that dote on their kids, particularly their 12-year-old golf-prodigy daughter.

A family that prize etiquette and elegance for their daughters swap with a family with down-home mud-racing tomboys.

A family that operates an organic goat farm swaps with an upscale family with a workaholic, shopaholic mom and a stay-at-home dad.

A family who focus their energy on one of its five children, a 9-year-old hip-hop artist, swap with a family in which the parents are obsessed with tracking down Florida's "Swamp Ape" to the point of ignoring their teenage son.

A driven, conservative family of gymnasts swap with a freewheeling family that enjoy kickball and karaoke.

In the sixth-season finale, a New York City couple who teach relationship workshops and dress as superheroes swap with a strict couple who moved to the country to shield their children from the influence of cities and believe in chores and discipline.