Nine months pregnant, and a few days past her due date, Keiko went to her grandmother for advice. "When your mother was a few days late, I had a game of table tennis and the next day I went into labor," grandma said.

Keiko, 33, didn't have a table tennis table, but she had what you might call the modern equivalent: a Wii.

For those of you who just thought "a what?," chances are you haven't watched television for about a year and so probably have no need for a TV-dependent gizmo anyway. You see, a Wii is one of those video-game consoles where players use a movement-sensitive wand to control their on-screen personas. The tennis game in "Wii Sports," for example, requires users to wave their arms around in real-life forehand and backhand movements — a lot like in a game of table tennis.