It's an interesting list. I think the comments they give on Olympic are justified. But it's one of the true tests of golf for the pros, and one of the more intriguing ones at that. It serves a purpose in the game, but one that shouldn't be imitated too much.
Chicago has me really scratching my head. Big time. I am a little surprised by Old Mac's inclusion on the list as well. You may all remember my criticism of it a while back on Tom's "Rank My Courses" thread (and I've revised my opinion slightly since), but unless it's "courses this site gives too much love" (which, lets be real, Alotian is the last place to get love on here), but I still think it's a good golf course, and am a little surprised, given its place in the rankings, that it would be included on this list.