The second Mario Marathon is up and running right now, to benefit Penny Arcade’s Child’s Play Charity. Three crazy people will play through the seven core Super Mario Bros. games on Wii Virtual Console in one weekend, nonstop, with limited sleep. Hilarity will ensue. Donations will be made, to buy games, toys, books, and other goodies for the kids in children’s hospitals across the world. These kids suffer plenty, and anything that the gaming community …