Rosario Dawson -- The Hottest Woman to Speak Klingon Ever

It was only one word, but noted "Star Trek" fan Rosario Dawson busted out a little Klingon for us last night ... thus becoming the hottest woman to do so in recorded history.

Dawson has never appeared in a Trek movie, but is famous for being a super fan. Her IMDB profile even refers to her as "a huge fan of the Star Trek franchise, and even speaks broken Klingon language."