Beverly Johnson probably put the final nail in the coffin.
http://www.vanityfair.com/culture/2014/12/bill-cosby-beverly-johnson-story?mbid=social_retweet
This is very similar to Jimmy Savile: Seemingly everyone knew but it was always hushed up. Although at least Cosby is still alive to his career fall apart, so that's something.
I feel kinda bad for the kid who played Theo's residual checks.