Unless you believe the Cal Ripken/Kevin Costner conspiracy theories, lol:
Cal Ripken, Jr. was allowing Kevin Costner, the actor, to stay at his house, following the wrap of "The Postman". One day, Ripken left for Camden Yards to play in a game. Somewhere between his home and the stadium, Cal realized that he had left something back at his house, and turned back to retrieve it. Upon arriving at his home, he found Kevin Costner in bed with his wife, Kelly. Cal then proceeded to beat the crap out of Costner, to the point that Costner was unable to make any publicity opportunities for a time. Cal then called the Orioles, and told them he wouldn't be coming in to play that day. Upon hearing this, the owner reminded Cal about his streak, telling him The Streak would end if he didn't play that day. Cal told him it was impossible for him to come in, so there went the streak. Reportedly, the owner told him not to worry, because he would take care of it. That night, the game was cancelled due to "electrical failure" with some lights on the field. The caller said that their was no problem with the lights, that everything else, including the hotels and restaurants that are part of Camden Yards, worked perfectly. The next day, the lights were fixed, Cal was able to play, and the streak stayed intact.