Tara August has the enviable role of partnering with the loquacious, outspoken - and outsized - personality of Charles Barkley on “Inside the NBA” on Turner Sports. With an initial two-year deal with TNT signed in 2000, Barkley has entertained hundreds of millions of sports fans since. August not only keeps things on track, but she and Barkley have a decades-long friendship and business partnership few know about and most would envy.