There's a great piece up at mental_floss on 8 Obscure Rules From the World of Sports, which contains this pearler:
"Everyone knows that if a player bats out of turn, he’s out. A weird situation popped up in a 2005 Kansas City Royals game, though. David DeJesus batted first in the first inning and hit a single. At that point, the umps realized that DeJesus was actually second in the Royals’ lineup and called him out. That meant the second man in the batting order had to come up to bat…David DeJesus. He flew out in his second at-bat. Fans of the Royals will tell you this pretty much encapsulates David DeJesus’ skill set: he’s so bad that he can make two outs in a single inning."
The rest is just as good.