Quidditch World Cup
If you've read the Harry Potter books or seen the movies (or have even a passing awareness of either), then you're probably familiar with the fictional sport of Quidditch, traditionally played by wizards and witches on flying broomsticks.
We might not have flying broomsticks and Golden Snitches in the real world, but high school and college students have invented a passable version of Quidditch you can play yourself.
Over 100 teams met in New York this weekend for the Quidditch World Cup. This video explains the rules and background of the sport and gives you a look into this odd niche of intercollegiate athletics.