"In four decades of Marketplace, we've come across a lot of products - and a lot of pitchmen - that proved to be too good to be true. We're revisiting three of the most outrageous stories, and the people behind them: from an outrageous inventor pitching a $20,000 electronic cure-all; to guarantees of a job in a troubled economy; to a juice marketed as a miracle in a bottle. Where are they now?"