oh, sure! Well if you go into any large video game arcade (at least around where I live) just walk around until you find a game with lights, music, and players jumping up and down on little arrows
.. thats DDR!
DDR stands for Dance Dance Revolution, so called because the whole game is based on you 'dancing' to the music you choose by stepping on the arrow buttons at exactly the right time! There are 4 arrows, one in front, one behind, and one to either side of you. As the arrow icons scroll up the screen they pass little arrow-shaped frames, and at the moment they are perfectly on top of the frame you must press the corresponding button. To be good at DDR, you must be in fairly good physical shape (if you arent this game will get you there), have a good sense of musical timing, and good coordination! Thats why its so cool
The downside is, the game is generally very expensive to play compared to most games arcades have lying around. But if you find that you really like it, you can buy one of the home versions of the game for playstation or ps2, and a dance pad for maybe $20 extra. Sadly all I have is a gamecube, and sony seems to have the exclusive contract on this game
But hey, thats what FFR is for!