There are purported CVR recordings posted online on YouTube and elsewhere. Some, like the widely circulated Air Florida 90 tape seem to be authentic. Others appear to be dramatizations from the published transcripts done for documentaries or airline training. A few appear to be outright hoaxes like some of the MH370 stuff being passed around.
Airline urban legends and crew bus stories often seem to claim missing details from the published transcripts like the 'shut up gringo!' line before pulling the GPWS circuit breaker on a 1980's Avianca CFIT accident. In the aftermath of the 2013 Southwest hard landing mishap at LaGuardia the captain supposedly said 'I just don't know what happened.' 'You just crashed the plane is what happened' was the FO's alleged reply. None of these quotes appear in the officially published transcripts.