From juiced-up runners and sex scandals to dog-abusing quarterbacks and evil figure skaters, we reveal the most infamous sports shames of all time

He's accused of a major role in what's being dubbed the most sophisticated doping conspiracy ever seen. Now it's time to hear the truth from the man himself. Lance Armstrong has promised to talk candidly about his history of performance-enhancing drug use in an interview with Oprah Winfrey that airs today (US time) and tomorrow. And there are millions of fans around the world who can't wait to hear what the cancer survivor and seven-time Tour champion has to say about what could be one of the biggest sporting scandals of all time. Even with a complete confession, Armstrong isn't likely to avoid ending up in the sports scandal hall of shame, along with the rest of these shocking incidents...