Without Tygart, most of the U.S. cycling fans would still think that Armstrong somehow won 7 TDF titles racing clean.  They'd be touting freedom fries, alleging witch hunts and griping that the French are jealous because an American beat them fair and square.  They would think that Betsy Andreau is a hysterical drama queen and that LeMond is a bitter ex-champion.  I'd say Tygart did his job very well by helping take down the biggest fraud in recent sports history outside of Barry Bonds.