The Crossfit main site WOD today was one of the regional WODs. If you watch the updates, you'll see that many athletes didn't finish the WOD in the allotted time, and there were some that just killed it. I realize that I'm not in extremely good shape, but I'm also not in very bad shape. These guys are just animals.
I did the WOD today, scaled the number of required pull-ups and even scaled the weight on one of the lifts, and my time was not too impressive, 30+ minutes. There were some athletes that did it in under 20...crazy!