I'm currently reading Join Me by Danny Wallace - the true story of a man who started a cult by accident. It follows the growth of the 'collective' from humble beginnings as Danny sits in his flat watching films in his underwear until it's members multiply across the globe doing random good deeds, and he attempts to hide the entire thing from his girlfriend. A very funny read containing essential advice and guidance for anyone who's ever considered setting up a cult.

Apparently, the group is still very much alive and kicking at the Join Me website.