Looks like reports of Wii damage aren't going away anytime soon: people are still damaging their television sets, lamps, windows, pets, and selves as they flail about living rooms designed more for lounging than energetic indoor video games.
Rather than fight it, flow with it. The KNOCK-OFF LAMP's beautiful, white polyproylene exterior echoes the Wii aesthetic, and it's made to be knocked over. At just $22.00, it's also probably cheaper than non Wii-proof lamps, too.