Rebecca Watson is a female atheist (duh) & originator of a blog called "Skepchick," who wants to promote gender equality in the "skeptic community." Anywho, she was at some kind of atheist convention. After the fact, she made a video blog detailing her visit, part of which explained being hit on by a man in an elevator. She, I guess, wanted to advise that people not do that. Of course, being a blog entry, it was over-analyzed to all Hell, resulting in an incredibly stupid flame war (redundant). Dawkins, who was also there, had heard her speak about sexism in the atheist community, & picked up on this whole thing evidently thought she was being melodramatic, & proceeded to compare her situation to women's rights violations in radical Islamic countries. They had a debate, neither one being persuaded by the other, & she & a lot of her supporters basically boycotted him after the fact. Conservapedia has an article on it called "Elevatorgate," which it uses to justify the claim that most atheists are socially dysfunctional men, & to laugh at atheists "attacking each other" in general. I'm sure you could find a lot of other blog entries about it, as well.
So, to recap:
Shit was stupid.
Dawkins is an ass, but his whole overarching point is that it's not necessary, nor inherently desirable, to be nice during a debate. Sometimes it gets him into trouble, but I can appreciate that general approach.