We're not sure why anyone would buy a knock-off DualShock 3 or SIXAXIS gamepad, considering the trouble Sony's taken to make sure they don't work, but the PlayStation 3 manufacturer has another reason you might want to steer clear of counterfeit pads -- they could be tiny Li-ion bombs poised to explode. Talk about force feedback! Yes, the company that brought us exploding laptop batteries says that third-party products "which are practically identical in appearance to genuine PlayStation(R)3 wireless controllers" may burst into flame, and as you might expect, Sony s