The Cure for Insomnia
The Cure for Insomnia, directed by John Henry Timmis IV, was officially the world's longest movie, according to Guinness World Records, as of its release in 1987. Running 5,220 minutes (87 hours, or 3 days and 15 hours) in length, the movie has no plot, instead consisting of artist L. D. Groban reading his 4,080 page poem, "A Cure for Insomnia" over the course of three and a half days, spliced with occasional clips from heavy metal and pornographic videos. This was succeeded by the film Matrjoschka in 2006 with a total of 95 hours of run time and Cinématon in 2010 with 150 hours of run time.
It was first played in its entirety at The School of the Art Institute in Chicago, Illinois from January 31 to February 3, 1987 in one continuous showing. It was never released to the public, but had it been made available on DVD, it would have been about 22 discs.