One of the comments, kinda what I already expected: "Spoiler: One of those guys used to work for Salesforce! (not kidding, they announced it during the demo). The French guys were followed around during the entire hackathon by a salesforce camera crew (I was sitting right next to them, some of the salesforce people even came over to help them submit to be sure they got it in before the last 5 min was up, kinda knew t…
I know the developers of the healthcare app personally. They competed properly and within the rules, day and night, in preparation for the demo. They have the professionalism and the "wow" factor that you mentioned. Just because you may think it's too polished to be done in a few days by a few people, does not make it so.
See- http://www.meetup.com/Salesforce-com-Integration-Analytics/e...
So maybe, since you have this personal relationship with them, you can get the developers to come here and explain how that happened?