What is the fake name screenwriters use when they are ashamed of the fiilm?

Screenwriters often use the pseudonym "Alan Smithee" when they want to disown a film due to dissatisfaction with the final product or creative differences. This name has become synonymous with projects that the original creators feel do not represent their vision. The Directors Guild of America established this practice in the late 1960s, allowing filmmakers to retain some anonymity regarding their work.