Richard Dawkins has not exactly found favor with some of my fellow atheists who accuse him of turning atheism into some sort of crusade, but the God Delusion has sure helped me cement my breakaway from religion. For me, Dawkins comes across as a respectable gentleman who decries the rise in religious fundamentalism and sincerely wants the world to adopt secularism.
The book provides a fairly good exposé on irrational (religious) belief systems and is quite easy to follow. Recommended as a good starting point for anyone afflicted with doubts about religion, but is also recommended to fervent religionists alike.
The God of the Old Testament is arguably the most unpleasant character in all fiction: jealous and proud of it; a petty, unjust, unforgiving control-freak; a vindictive, bloodthirsty ethnic cleanser; a misogynistic, homophobic, racist, infanticidal, genocidal, filicidal, pestilential, megalomaniacal, sadomasochistic, capriciously malevolent bully.