Michael Bennet is self-proclaimed greatest living car salesman

Director John Landis filmed documentary on Bennet for Independent Film Channel

Produced by Chris Kobin, a former used-car salesman

Film follows Bennet over holiday sale in Memphis used-car lot

Brings his own guerilla sales team, including disc jockey, to clear lot

Critics say film portrays Bennet and used-car industry in poor light

Says Bennet spends only 6 days a month w/ family but has time for strip clubs

Film soundtrack includes Otis Redding, Sam and Dave, Booker T and other Memphis soul music stars

"It's a world that's part circus road show, part con job and part clinic on the world of business -- a representation of capitalism at its crudest." -- promotional copy for 'Slasher'