Best Buy during the holidays is a special kind of hell. Swarms of soccer moms trailing toddlers, looking for the new game of the year. Overweight dads butt-glued into recliners in front of NASA-style walls of aggressive televisions, commenting on the silent football games arrayed before them. Hordes of middle aged couples making dreadfully misguided computer purchases.But the best part of the Best Buy holiday extravaganza are the demo kids. And it was one of these kids who showed me something I will never see again.Guitar Hero 3. "Through the Fire and the Flames." Expert.