The first couple were quite interesting as an experiment and at times were fun to watch, but when people started to exploit it to get their 15 minutes of fame, or in the case of the 'celebrity' one extending their 15 minutes of fame, it lost its entertainment value for me. If they put intelligent, interesting people in there, ones who weren't interested in fame, and they introduced creative tasks and twists and such it might be watchable again, but that isn't likely.