The opening montage of time-lapse shots and other scenes of the world where we see ads for Kable and/or graffiti of Ken Castle overlaid on buildings or walls are mostly taken from Ron Fricke's wordless film Baraka (1992), for example, the shots of the Giza Pyramids, India, homeless man sleeping under a bridge among others.
In an unusual move, the film was actually shot for the 2.40:1 aspect ratio. However, the first edited scenes were done with the unmatted image, but subsequently masked to 2.40:1. The directors preferred the 1.85:1 version, which allowed the audience to see more information and accommodated the handheld camerawork better, and so the aspect ratio was switched. Miraculously, no boom mics needed to be digitally erased from the previously-unused picture information.