Dance steps, video gaming and other repeated physical activities use a third kind of memory, called kinesthetic memory. Lots of popular toys, like Simon or Boppit, also bring visual and spatial memory into the mix, demanding that we remember not just facts and stimuli, but quickly use our reflexes to duplicate sequences through movement. And, as in a demanding dance class, the greater repetition and speed with which you perform means greater muscle strength and muscle memory, so you're exercising mind and body at the same time.
Video games especially have long been associated with this form of memory. The old (and true!) cliché that video games improve hand-eye coordination is one example of this mental ability to express with our bodies the things our minds remember. And in recent years, the development of full-body gaming systems that use infrared lights to measure our movement has brought this experience to a new level.
From exercise games like "Wii Fit" to dance games like "Dance Dance Revolution" and the more recent "Just Dance" series, as well as movement games for younger kids, the exploration of kinesthetic memory in gaming has done a lot to highlight the many positive effects video games can have.