First, of course, there was the cyclist, Floyd Landis. He seemed to appear from nowhere -- to the shock of those of us who, thanks to Lance Armstrong's retirement, thought we had at least a year off from having to pretend we cared about cycling. Landis won the Tour de France last week, and within days, he turned out to have an unnaturally-high testosterone level. He denied doping in a strange, tell-tale fashion. And...