Professional cycling. 4+ hour races, where 3.5 hours are people "just riding along" (granted at speeds that us mortals can only dream about). The sprints and

Professional cycling. 4+ hour races, where 3.5 hours are people "just riding along" (granted at speeds that us mortals can only dream about). The sprints and the climbs are exciting, but everything in between is seriously boring for anybody who isn't a cycling geek (I am, my wife is not; she likes the 20 minute highlight reel, I spend most of July on the couch watching the Tour).