Want to keep your home life harmonious? Maybe it's time to send your man to his room.

That beat-up wagon-wheel coffee table from When Harry Met Sally showed the world that, when it comes to decorating, men and women are not only not on the same page, they aren't even reading the same book. A remedy making the rounds is something called a "man cave," a place where husbands can cut themselves off from the world of seagrass rugs, sideboards, and responsibility and surround themselves with girlie posters, bowling trophies and--we're guessing--beer. (We don't know for sure...they won't let us in to take a look.)

Don't confuse all man caves with traditional dens. Families these days are letting Dad take it outside to hole up in small detached rooms in the backyard. Kind of like the grown-up version of a tree fort, but replaced with a "No wives or kids allowed" sign tacked on the door.

Some couples actually swear by the "mantuary," saying it cuts down on bickering. Could it be because men are innately territorial and have a deep-seated need to claim their own space? Hey, it beats arguing over when he's going to get rid of the tattered, stained, brown leather La-Z-Boy chair in the living room.

Does your man have a "man cave"?