I saw an article referenced on the Wall Street Journal's webpage and found the analysis to be interesting (but that may be because I am a dork). Basically, they use the frequency each columnist uses specific, unique words and then apply that to individual columns to see if they can determine the author of the different columns.
I think the most interesting part was the list of the top words and adjectives/adverbs used by each author.
I was worried about not having enough time to start a Week 2 thread, but Week 3 differed just enough that I could justify a combo thread. Weeks 2 and 3 of 52 have passed and the series is starting to pick up a little steam. The brief recap: Week 2: