One of the major U.S. holiday shopping days is known as "Black Friday." It's the day many U.S. consumers, such as Jen Sparks begin Christmas shopping... It's 2a.m., Nov. 26th and Mark is told by his wife he will have to wake up soon. Why would Mark, who normally values his sleep wake up so early? Because it's Black Friday, the biggest shopping day of the year. His wife Jen, who loves bargain hunting, has a game plan, and Mark is part of it. Here are some tips from a self-proclaimed bar...