A fake band created by Grandaddy with deliberately terrible songs.

As a hoax Grandaddy put together an Arm of Roger album and submitted it to their own record label who were anticipating hearing the completed 'The Sophtware Slump'.
Later, when touring their 'Sumday' album, Grandaddy sold self-produced copies of the infamous Arm of Roger work on their merch stands, and via their online store.