Swim News did a bunch of homework sizing up their favorites for the the swim events in Beijing. You would think Craig Lord was a Las Vegas actuary or odds maker in that his list is so thorough. Here is a link to the Craig's. [Link]
The photo above is Ben Wildman Tobriner of Stanford. He is my favorite for the 50m free since he can swim consistently under 22.00. (He has done so 3 times according to the Swim News article.)
Alain Bernard has posted the fastest time this year but he needs to post a couple of sub 22s before I change my mind.
The above photo comes from EmmyMik's photostream at Flickr.com. Here is a direct link to the photo: [Link]