Glitch art is an art movement centering around the practice of using digital or analog errors, more so glitches, for aesthetic purposes by either corrupting digital data or physically manipulating electronic devices. It has been also regarded as an increasing trend in new media art, with it retroactively being described as developing over the course of the 20th century onward.
Example of glitch art, by Rosa Menkman
A glitch is a short-lived fault in a system, such as a transient fault that corrects itself, making it difficult to troubleshoot. The term is particularly common in the computing and electronics industries, in circuit bending, as well as among players of video games. More generally, all types of systems including human organizations and nature experience glitches.
A computer affected by a visual glitch
The start-up screen of the Virtual Boy is affected by a visual glitch.