On Wednesday, the Ravens visited the White House, and Friday night, they will get their Super Bowl rings -- an exciting celebratory week for the NFL champions. The party will then be over, though, and the Ravens must avoid a Super Bowl hangover in the coming months. The majority of Super Bowl champions (32 of 46) were able to make it back to the playoffs, and a handful of teams have repeated. But for some, the following season turned out to be a major headache. In this week's Five for Friday, Matt Vensel lists five of the worst Super Bowl hangovers.