The only thing Amy Goodman is guilty of is intellectual honesty and rationality. Demonizing someone who does so much good work just because she doesn't happen to accept a certain theory of events is arrogant and foolish.

As for the theory -- rather, theories -- themselves, see en.wikipedia.org/wiki/9/11_conspiracy_theories for why one might or might not find them credible.

As for Eric Hufschmid, see www.oilempire.us/holocaust-denial.html