It's been over two years since the last Olympic Games, and four years since the last Summer Olympics. Broadcasting the Summer Olympics exclusively since 1988 and the Winter Olympics since 2002, U.S. broadcaster NBC has cemented itself as the Olympics network. (Incidentally, NBC has already secured broadcast rights of every upcoming Olympics through 2020.) During the games, for years, they have pre-empted nearly all of their network programming to bring at least 12 hours per day of coverage over broadcast.