While some of his neighbors were decorating their houses with multicolored lights and illuminated Santas, Tony Hansen was building an assault on the senses. Using $10,000 worth of professional lighting and sound equipment that he borrowed from his job as a lighting designer, Hansen's 25,000-light display is synchronized to five songs, which he broadcasts over an FM-radio frequency so passers-by can pick it up in their cars.When "Snoopy's Christmas" plays, strobe lights timed to gunfire in the song flash, and at the end, when a champagne cork pops to signal the "holiday toast" between Snoopy and the Red Baron, half of Hansen's lights cut out as if they've been hit by the flying cork.