Sith. What kind of a word is that? Sith. It sounds to me like the noise that emerges when you block one nostril and blow through the other, but to George Lucas it is a name that trumpets evil. What is proved beyond question by “Star Wars: Episode III—Revenge of the Sith,” the latest—and, you will be shattered to hear, the last—installment of his sci-fi bonanza, is that Lucas, though his eye may be greedy for sensation, has an ear of purest cloth. All those who concoct imagined worlds must populate and name them, and the resonance of those names is a fairly accurate guide to the mettle of the imagination in question. Tolkien, earthed in Old English, had a head start that led him straight to the flinty perfection of Mordor and Orc. Here, by contrast, are some Lucas inventions: Palpatine. Sidious. Mace Windu. (Isn’t that something you spray on colicky babies?) Bail Organa. And Sith.
And here's Douthat:
Pace Lane, I actually think that "Sith" is one of the better names that Lucas coined; the worst include Dexter Jettster, Greedo, General Grievous, Count Dooku, and (of course) Jar Jar Binks.
Count Dooku gets my vote for worst name in the Star Wars universe.