This week ends with one of the most important days of the year. It's called Black Friday, and it could decide the future of a lot of battles and tell us whether this will be a good or bad season economically. There are two big battles that may actually be decided this week based on initial sales numbers.

HD-DVD vs. Blu-ray, Zune2 vs. iPod Classic Battles Decided, Black Friday Advice, Product of the Week