I'm always looking for context in which people tell stories. In "Fight Club" it's these support groups for dying people, and then in "Choke" it's 12-step recovery groups. In one novel it's artists' colonies, in another novel it's a diary form that submariners' wives typically keep so that when their husband comes back from serving on a submarine they have an accounting of their spouse's time. So I'm always looking for, number one, a non-fiction context - because you can tell a more outrageous story if you use a non-fiction form.
Chuck Palahniuk