A Super Bowl ad in 1970 cost a company $78,200 and was seen to be extravagant at its time. Now, 50 years later, the same 30 second spot will cost companies over $5.5 MILLION. Is it really worth it though for the companies to shell out all of this money during the big game? Most brands think so. Certain commercials remain in our heads for years after they first air but not all of them are winners. Here are our favorite commercials that span over the last 40 years.