For a psychedelic, rock-themed start to your day, try this Torchlight 2 gource on for size.
A gource takes software projects and transforms them into a central tree. Different pieces of art, sound, and code branch off as roots and leaves. In this case, the visualization represents almost three years of development on Runic Games' part, based off the activity in the company's source control system.
As for the music, Runic Games calls it "a recently unearthed archaeological selection from the long-distant schoolboy days of a certain Runic Games employee who shall remain nameless to spare he and his cohorts embarrassment."