I Waded In Clear Water
Speaking of using unusual data sources, here’s a procedurally generated novel based on the interpretation of dreams. Allison Parrish took a 1901 dream dictionary and used sentiment analysis to order them from worst to best, resulting in a gradual journey from a nightmare to a beneficent vision.
I particularly like that the structure of the novel works on both a conceptual level–there’s a strong theme that unifies the work–and as a resulting output. The result, like that of many generators from NaNoGenMo, is more poetic than prosaic, which I think is to its credit. Computers don’t need to be limited to dry utilitarian results.