Bravo TV is the factory that pumps out high quality reality TV like Project Runway, Top Chef, Shear Genius and the Real Housewives. In Australia Arena TV content is a majority of shows from Bravo.
The person behind the success of Bravo is Lauren Zalaznick. She not only continues to commission highly entertaining TV, but is also targeting the right demographic.
Among women ages 18 to 49, Bravo is the fastest growing of the top 20 entertainment cable networks, and its viewers are the most educated and upscale (about a quarter of them make more than $100,000 a year), a demographic that advertisers are desperate to try to reach.
The New York Times here has an indepth interview on Lauren examining her career and how she operates. I found it very interesting.