When kids go to the arcade these days, they aren't thinking flippers, bells, and bumpers; they're thinking video. But there are plenty of middle-age men out there reliving the era of pinball madness during their lunch breaks. Just go hang out at Grand Prix in Dania Beach, and you'll see cashiers change dollar bills for tokens faster than cars whiz past the place on I-95. The addicts position themselves for the game just as they would at the urinal, hips pressed against the pinball machines. They undo their nine-to-five ties and slam their hands against the glass when they fail to score. The featured pinball games at Grand Prix, by the way, are awesome. They aren't just equipped with a few flashing lights. Most of the machines are computerized. Star Wars Episode 1 offers scenes from the movie, Godzilla vibrates, and the four South Park games feature obscene language. That's enough to arouse even the most arcade-savvy traveler. Or maybe not. If you need more than pinball to motivate you for a trip north, consider this: At Grand Prix there's an authentic replica of Old Sparky, the electric chair that has put many a Florida felon to death. The Grand Prix arcade is open 24 hours a day, seven days a week.