“Twenty Broadway theaters fell dark tonight, as more than 1,000 musicians and actors took up picket signs and went on strike to protest producers’ attempts to reduce the minimum number of orchestra players at each musical.|From “Rent” to “The Producers” to “Chicago” to “Hairspray,” the biggest moneymakers on Broadway closed down.” Michael Powell and Christine Haughney —The Lights Go Out on BroadwayWashPost [resgistration; will expire])