I think the picture board would be a perfect place to post progress pics.
Starting a little thread there, explaining what the whole deal is all about, perhaps put a link to this thread, and then start it off by posting some pics.
JMO.
edit: FWIW, I think kiwiol could do a lot in only four weeks if he trains and diets with 100% focus. It would be a pretty cool transformation to follow IMO.
-Hedge