which was released first "Do I Sound Gay?" or "Walking with Cavemen" ?
Do I Sound Gay?:  is a 2014 American documentary film by David Thorpe, which explores the existence and accuracy of stereotypes about the speech patterns of gay men, and the ways in which one's degree of conformity to the stereotype can contribute to internalized homophobia. Walking with Cavemen: Walking with Cavemen is a four-part television documentary series about human evolution produced by the BBC in the United Kingdom. Walking with Cavemen:  It was originally released in April 2003.
Walking with Cavemen