He repeatedly stirred up hatred against gays. He lied through his teeth about Bill Clinton and hurled every vicious smear against the Clintons he could think of. He was consistently dishonest, a complete moral fraud, and a pseudo-Christian. He was a tyrant who wanted to see science driven out of the schools and a theocracy established in our nation. He had extensive ties to far-right psychotic and financier Sun Myung Moon. He was moral ugliness and hypocrisy personified. So I have no tears to shed for this wretched man. Eric Alterman has more here.
UPDATE: Think I'm being too rough? Check out the Falwell quotes from this article.