Physiognomic Scrutinizer is a project by Marnix de Nijs using humour to reflect on some of the key issues of our society.In this case,

The visitor is invited to walk through a brightly lit security gate similar to the ones you can find at airports, football stadiums and other protected public spaces. A camera takes a picture of their face and projects it on a LCD monitor behind the gate. A biometric video analyzing software scrutinizes the face but rather than try and identify the person, the software probes for facial features and characteristics that are similar to one of the 250 persons in the data base: each and everyone of them has gained fame for controversial or infamous acts (there are notorious transgender people, torturers, serial killers, pop stars addicted to drugs, etc.) Based on what the software detects, the visitor passing through the entry point will be accused according to the disrepute of their match and a stern, cold voice will enumerate their past deeds and misdeeds for everybody around to hear. The faces of the visitor and of the famous person are then displayed side by side on the LCD monitors behind the gate.

Check movie here.

Via: we make money not art

Besides perverts wanking off and people being nexted with a click ChatRoulette.com can be an interesting plattaform for creative people.
And this is an example, a piano improvisation with strangers.