Just watched porkchopwi's video from the Whitewater CX race last year (which was, coincidentally, the birth of carlosflanders) and had the following thoughts:

1. It's amazing how you forget just how nasty the cold weather was at some of these races;
2. Riding in the water was A LOT quicker than riding the sand;
3. A lot of really fun racing takes place at speeds one would hardly consider "racing" when not completely exhausted;
4. The girl who crosses the line before Psimet might be attractive in normal attire (hard to tell);
5. I never need to do another Wisconsin cross race. That course was brutal.

Video to get you going:

http://www.youtube.com/watch?v=ltwelCHMlQA

Edit: Add #6. Cyclocross really is for all shapes, sizes and bike types. Watch the start of that race...