With today's forensic technology, such as irrefutable DNA proof, I feel safe in assuming that wrongful conviction of a felony sexual offense is an extremely minute possibility.
That would be small consolation to this fellow in the following article.
http://www.ctv.ca/servlet/ArticleNews/story/CTVNews/20060203/WFIVE_justice_060203/20060204?hub=WFive
Even in this day of DNA evidence, all it takes are "expert" witnesses to get the testimony wrong and a man can spend years in prison.
Imagine upon coming out, not only would he have missed the prime years of his life, but he would have to live as a castrated man.
How would society make that up to him? I don't think any amount of money would compensate for that.