Every four years, curling becomes one of the most talked-about sports. Olympic viewers across the country suddenly find themselves fascinated by a game that, if we're being honest, most of us know almost nothing about. Curling was included in the inaugural Winter Olympics in 1924 and functioned as a demonstration sport until it was officially added to the program for the 1998 Nagano Winter Games. Despite its long history, the sport still feels like an Olympic enigma — full of sliding stones, frantic sweeping and, of course, incredibly stylish pants. Watch NBC Bay Area News free wherever you are WATCH HERE Cameron Spencer/Getty Images Cameron Spencer/Getty ImagesThe Norwegian Men's...