Part one of three.
This 1985 public television special is basically a precourser to their 1994 British miniseries, 'The Unpleasant World of Penn & Teller', which I've already uploaded.
Many of the tricks are repeated in later shows or are early versions of material they would later improve upon for subsequent TV specials, but it's still worth a look.

Part Two:    • Penn & Teller Go Public - Part 2/3  

Part Three:    • Penn & Teller Go Public - Part 3/3