NBC reality chief Paul Telegdy is to give a keynote address at the Edinburgh International TV Festival. Telegdy, who is President of NBC Entertainment's Alternative and Reality Group, will give the "Worldview Address" at the three-day confab in Scotland, which runs August 22-24. The Brit will discuss the current content arms race and its impact on creativity on a global scale and his speech will be followed by a Q&A. This comes as Telegdy, who has been with the…