Andrew Wakefield, the doctor whose research sparked international concern over whether or not childhood vaccines cause autism, was found guilty by a British panel of acting unethically in his research on autism.
Wakefield was the lead author a small-scale 1998 case report involving 12 children that suggested a link between vaccines and the onset of childhood autism. The study was immediately seized upon by anti-vaccination advocates, including Jenny McCarthy, the actress and model. Since then, McCarthy has spearheaded a global anti-vaccine movement, accusing drug companies of ignoring children's safety.
Unfortunately, that study has since been revealed as flawed (if not outright faked); the paper was retracted, and ten of Wakefield's co-authors have repudiated the work. According to an ABC News story
Among the charges, Wakefield was found to have taken blood samples without consent from children at a birthday for his child as part of his research. Ironically, the inquiry also found that Wakefield had failed to disclose that he had a financial interest in a patent for a new measles/mumps/rubella (MMR) vaccine he had in development.