It wasn't directly commented as a topic by a student, but as a side note: families where one person is a hardcore fan of a team, and another is a hardcore fan of a direct rival. For example, my wife is from Maine and is a Patriots fan. I'm from (well, all over, but mostly North Jersey) so I'm a Giants fan. Made a few Super Bowls pretty interesting in my house as I couldn't cheer too loudly without potentially having to sleep on the couch.