The most memorable teams in NFL history are the powerhouse Super Bowl champions -- the 1970s Pittsburgh Steelers, the 1980s San Francisco 49ers, the 1990s Dallas Cowboys.
As enjoyable as those teams were to watch, it's worth remembering the NFL has had its fair share of surprise Super Bowl winners over the years: the 1980 Oakland Raiders, 1981 San Francisco 49ers, 1999 St. Louis Rams and 2001 New England Patriots.
Since the NFL doesn't appear to have a team in the middle of a true dynasty, the time looks ripe for another team to come out of nowhere to win the Super Bowl.