Dance Dance Revolution, the video game where players dance to synchronized music, was all the rage when it debuted in Japan. Now, it appears to be taking Northwestern University by storm. The Daily Northwestern reports today that a professor in the university's communications department is using the popular video game to teach Ph.D. students how technology influences social behavior. The newspaper quotes the professor as saying, "I bought it so we can all play it together, and I think it's the single most popular thing I've done." Looks like the games are just getting started: The professor also plans to buy her students a Nintendo Wii.