Just returned from my first trip to Prairie Dunes and I've got to say I was more than impressed with it. While I've always heard how highly regarded it was, I've always thought that I'd find it good but maybe not quite my cup of tea.
I found it to be exactly the opposite - immediately one of my favorite courses and a place I think everyone should go if they are able.
Without getting too much into discussions that have been had before (or overlapping Ran's writeup) I'd say that the things that struck me most strongly were these:
1) The course is nowhere near as narrow as reputed - You can lose a ball on every single hole, sure, but you know you've hit a very poor shot if you do. The corridors are much wider than I'd imagined them to be.
2) The greens are possibly the best I've played - my favorite thing about them is that they are contoured without being crazy (like a Doak green, for example). Often times a single feature dominates the playability of the green and even your approach shot. The thought process is much more complex than simply being on the right level or in the proper quadrant of the green. Take, for example, the hump short of the 11th green - You have to start thinking about this single feature from the tee. Same goes for the fall-off left of 18 and even the hump on the right side of 1.
3) The course is much more fun that I'd thought it would be - when considering it against other highly regarded middle-america courses (Ballyneal, Sand Hills) which have been built with the fun factor looming large, I'd imagined Prairie Dunes to be the antithesis of fun - long, windy, narrow, and difficult. While it is at times long, certainly windy, and without a doubt difficult, it's not narrow and it's a ton of fun - from the rolling fairways to the greens that have just the right amount of contour to them, to the various chipping areas and the often awkward recovery shots from them, it's just through and through a fun (and extremely challenging) course.
As for the pics (Sorry, don't have a scorecard in front of me for yardages)
1st tee just after sunrise
Behind the 1st green
2nd hole
3rd tee
4th hole - par 3
5th hole - par 4
6th hole - par 4
8th hole - par 4 - one of the best holes I've ever played
8th green - Can't even begin to capture the contours here
10th hole - par 3
12th hole - par 4
14th tee - very confusing on the first play
15th tee - par 3 with a menacing chute of trees to navigate
16th green
17th fairway - Par 5 - 517 yards
The extremely difficult 17th green
18th hole - par 4
Behind the 8th green with the 9th and clubhouse in the background