When it comes to ridiculously large optical disc storage capacities, Pioneer is trying to win the prize by announcing that it's working on a one terabyte (1TB) Blu-ray disc, which could be available in the next couple of years. It has already perfected a 400GB disc, and a half-terabyte disc is also expected to be released commercially soon. Interestingly, the 400GB disc is already compatible with a number of existing Blu-ray players including Sony's PlayStation 3...