Here is an interesting podcast covering some martial arts myths that have been propagated in popular culture.
The link takes you to the transcript that supports the podcast, the listen link gives you access to the podcast.
The Skeptoid site is run by a guy called Brian Dunning. The site focuses on critical thinking and tackling "pop-culture" assumptions and myths. He has a huge number of podcasts, they are weekly, each is about 10 mins long and he has been doing them for at least 4 years.
Anyway this is his take on some of the martial arts myths... thought it might lead to an interesting discussion.
(apologies if this has already been posted elsewhere)